instructions, examples, and functions in this guidebook also work for the TI-84 Plus. The two graphing calculators differ only in available RAM memory, interchangeable faceplates, and Flash application ROM memory. Sometimes, as in Chapter 19, the full name TI-84 Plus Silver Edition is used to distinguish it from the TI-84 Plus. Apr 14, 2020 · To find the Z critical value on a TI-84 calculator, we can use the following function: invNorm (probability, μ, σ) where: probability: the significance level. μ: population mean. σ: population standard deviation. You can access this function on a TI-84 calculator by pressing 2nd and then pressing vars. This will take you to a DISTR screen ... Get the best deals for ti-84 plus at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!The TI-84 Plus CE stands out as a premium graphing calculator that you can rely on, boasting over a dozen built-in applications, including correct math notation, inequality graphing, and data collection. The graphing calculator is exceptionally thin and surprisingly lightweight and comes with a high resolution, full-color backlit display.Scroll to the Solve function and press [ENTER]. First, set the equation to be solved equal to zero. To solve X/2 + 5 = – 2X, add 2X to both sides. The syntax of the Solve function is: Solve (expression, variable, guess). The expression is the part of an equation that has been set equal to zero. See the first screen.It's this area, right there. I'm gonna do this with a TI-84, at least an emulator of a TI-84. All we have to do is, we would go to 2nd distribution and then I would use the t cumulative distribution function so let's go there, that's the number six right there, click enter. My lower bound...Step-by-step instructions. Standard deviation can be calculated using several methods on the TI-83 Plus and TI-84 Plus Family. Standard deviation can be calculated by using the stdDev () function. The stdDev () function can be located by performing the following: 1) Press [2nd] [LIST]. 2) Scroll to MATH and select 7:stdDev (.Yellow/School condition units are School Property versions in yellow color. Screen Scratches/Dents condition are budget units in Acceptable or better condition that minor screen scratches and dents. USB Cable (USB Mini-B to USB-A) for HP-50G, TI-84+, TI-NSPIRE, and Others. $3.95, 3/$9.93, 6/$15.96, 12/$29.88. To find the Z critical value on a TI-84 calculator, we can use the following function: invNorm (probability, μ, σ) where: probability: the significance level. μ: population mean. σ: population standard deviation. You can access this function on a TI-84 calculator by pressing 2nd and then pressing vars. This will take you to a DISTR screen ...In other words, all versions of TI-84 Plus and TI-Nspire™ CX (excluding CAS) graphing calculators are allowed on the ACT ® exam. However, these calculators have the capability to add a program or app that gives the calculator CAS capabilities. CAS calculators can do calculus commands like integrals and derivatives.Jul 19, 2022 · The TI-84 Plus CE stands out as a premium graphing calculator that you can rely on, boasting over a dozen built-in applications, including correct math notation, inequality graphing, and data collection. The graphing calculator is exceptionally thin and surprisingly lightweight and comes with a high resolution, full-color backlit display. Texas Instruments graphing calculator is ideal for students of all ages. The Texas Instruments TI-84 Plus Graphing calculator 10-Digit LCD has eight display lines, includes a USB computer cable and is fully compatible with TI-83 Plus. More than a dozen preloaded apps. Ideal for middle school through college. A TI-84 Calculator, sometimes called a TI-84 Plus or a TI-84 Plus Graphing Calculator, is the gold standard right now for math, science, and statistics courses in high school (and beyond). In a nutshell, the TI 84 is a powerful calculator for students to create more complex graphs and solve higher math equations.September 22, 2019. Texas Instrument’s best-selling graphing calculator, the TI-84, is a woefully outdated piece of technology. Since its debut in 2004, its specs and components have remained virtually unchanged. With 24 kilobytes of RAM, a 96×64 pixel screen, and a power system that still relies on 4 AAA batteries, it has been usurped by ...The TI-84 Plus is a graphing calculator made by Texas Instruments which was released in early 2004. There is no original TI-84, only the TI-84 Plus, the TI-84 Plus Silver Edition models, and the TI-84 Plus CE. The TI-84 Plus is an enhanced version of the TI-83 Plus. The key-by-key correspondence is relatively the same, but the TI-84 features ... Oct 29, 2020 · In this video, I give a introductory tutorial on the Texas Instruments TI-84 Plus calculator, one of the most commonly used graphing calculators today.Topics... The TI-84 Plus CE and TI-84 Plus C Silver Edition can display either Mathprint or Classic modes to solve equations. Mathprint is the default mode, to verify or change modes, press [MODE], highlight MATHPRINT or CLASSIC and press [ENTER]. To solve 2x+6=10 in Mathprint mode, follow the steps below: 1) Press [MATH] [ALPHA] [B] OR press [MATH] and ...Aug 9, 2022 · 1. Press the STAT button on your calculator. It's in the third column of keys. 2. Select the Edit menu and press ↵ Enter. It's the first option on the menu. You will see columns (lists) labeled L1 through L6. Note: The TI-84 allows you to enter up to six different lists of data sets. 3. Apr 14, 2020 · Step 2: Fill in the necessary information. The calculator will ask for the following information: x: The number of successes. We will type 12 and press ENTER. n: The number of trials. We will type 19 and press ENTER. C-level:The confidence level We will type 0.95 and press ENTER. Lastly, highlight Calculate and press ENTER. From the keyboard and computer-menu interface to the ability to save and share work with built-in apps, the TI-Nspire™ CX II models retain the features and functionality that make TI-Nspire™ CX graphing calculators ideal for math and science from middle grades through college. Perform computations and enter expressions, equations and ... Texas Instruments Ti-84 Plus Graphing calculator - Black (Renewed) 91. 300+ bought in past month. $9599. New Price: $103.00. FREE delivery Sep 7 - 12. Or fastest delivery Sep 6 - 11. Only 1 left in stock - order soon. It retains the same functionality as its predecessor, the TI-83+, but offers more memory, and several updated features. Keypress sequences that work on one usually work on the other. The keys on the TI-84+ are colour-coded by function. The white keys include the number keys, decimal point, and negative sign. When entering negative values, use ... Get the best deals for ti 84 at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!Page 46: Working With Statistics. Notes: • With each rand execution, the TI-84 Plus CE generates the same random- number sequence for a given seed value. The TI-84 Plus CE factory-set seed value for rand is 0. To generate a different random-number sequence, store any nonzero seed value to rand.probability: the significance level. v: the degrees of freedom. You can access this function on a TI-84 calculator by pressing 2nd and then pressing vars. This will take you to a DISTR screen where you can then use invT (): This tutorial shares several examples of how to use the invT () function to find T critical values on a TI-84 calculator.Get the best deals for ti 84 at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!Texas Instruments Ti-84 Plus Graphing calculator - Black (Renewed) 91. 300+ bought in past month. $9599. New Price: $103.00. FREE delivery Sep 7 - 12. Or fastest delivery Sep 6 - 11. Only 1 left in stock - order soon.Page 46: Working With Statistics. Notes: • With each rand execution, the TI-84 Plus CE generates the same random- number sequence for a given seed value. The TI-84 Plus CE factory-set seed value for rand is 0. To generate a different random-number sequence, store any nonzero seed value to rand.Step 1. Access the TVM Solver. Follow these steps to access the TVM Solver: Press [APPS] to access the apps that are loaded on your calculator. See the first screen. Press [1] or [ENTER] to start the Finance app. See the second screen. Press [1] or [ENTER] to display the TVM Solver.Finding the Area Under a Standard Normal Curve Using the TI-84Visit my channel for my Probability and Statistics Videos.Buy and sell used ti-84 calculators with local pick-up or shipped across the country Log in to get the full Facebook Marketplace experience. Log In Learn more $40 TI -84 Plus Silver Edition Graphing Calculator Springdale, AR $50 Texas Instruments Ti-84 Plus CE Color Graphing Calculators Chetopa, KS $25 brand new graphing calculator Winfield, KS $60 Getting started with the TI-84CE from un-boxing to performing simple calculations, see how to change your settings, store variables and use some of the built...The TI-84 Plus CE stands out as a premium graphing calculator that you can rely on, boasting over a dozen built-in applications, including correct math notation, inequality graphing, and data collection. The graphing calculator is exceptionally thin and surprisingly lightweight and comes with a high resolution, full-color backlit display.In this tutorial, I will be assuming you have never used a TI graphing calculator before. We will cover what you would need in a basic algebra or precalculus class. Detailed answers/keystrokes for all examples are at the end of each section. If you are following this tutorial on a TI-84 calculator you may have Mathprint installed. Turn Mathrprint Aug 9, 2022 · 1. Press the STAT button on your calculator. It's in the third column of keys. 2. Select the Edit menu and press ↵ Enter. It's the first option on the menu. You will see columns (lists) labeled L1 through L6. Note: The TI-84 allows you to enter up to six different lists of data sets. 3. Get the best deals for ti-84 plus at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!Scroll to the Solve function and press [ENTER]. First, set the equation to be solved equal to zero. To solve X/2 + 5 = – 2X, add 2X to both sides. The syntax of the Solve function is: Solve (expression, variable, guess). The expression is the part of an equation that has been set equal to zero. See the first screen.Products. Texas Instruments offers you a wide variety of learning tools for mathematics and science. Further calculators especially for business or home use, as well as accessories make our portfolio perfect. To have a look at our product range and visit our Germany website (German language) or France website (French language).ti 84 calculator used for sale | eBay All Listings Auction Buy It Now Condition 3,600 + results for ti 84 calculator used Save this search Shipping to: 23917 Shop on eBay Brand New $20.00 or Best Offer Sponsored Texas Instruments TI-84 Plus Graphing Calculator Black With Cover Pre-Owned 3475 product ratings $93.00 jakesmerchandise (8,298) 100% Step 2: Fill in the necessary information. The calculator will ask for the following information: x: The number of successes. We will type 12 and press ENTER. n: The number of trials. We will type 19 and press ENTER. C-level:The confidence level We will type 0.95 and press ENTER. Lastly, highlight Calculate and press ENTER.From the keyboard and computer-menu interface to the ability to save and share work with built-in apps, the TI-Nspire™ CX II models retain the features and functionality that make TI-Nspire™ CX graphing calculators ideal for math and science from middle grades through college. Perform computations and enter expressions, equations and ... Advanced analysis tools are also available on the Texas Instruments TI-83 Plus. You can access statistical and regression analysis, graphical analysis, and data analysis when needed. There are features that can be used for all different types of math. The large, clear LCD screen is easy to read and can display up to 12 characters and eight lines.Advanced analysis tools are also available on the Texas Instruments TI-83 Plus. You can access statistical and regression analysis, graphical analysis, and data analysis when needed. There are features that can be used for all different types of math. The large, clear LCD screen is easy to read and can display up to 12 characters and eight lines. Page 46: Working With Statistics. Notes: • With each rand execution, the TI-84 Plus CE generates the same random- number sequence for a given seed value. The TI-84 Plus CE factory-set seed value for rand is 0. To generate a different random-number sequence, store any nonzero seed value to rand. Save on Calculators. Brand New SEALED 2022 MODEL! Texas Instruments Ti-84 Plus CE Graphing Calculator. $98.97. Trending at $110.00.Texas Instruments TI-84 Plus Graphing Calculator 10-Digit LCD. TI-84 Plus Graphing Calculator 10-Digit LCD. New. An essential educational tool it is conveniently preloaded with software including Cabri Jr. interactive geometry software to give users the edge they need to succeed in the classroom.Jan 21, 2022 · The TI-84 Plus C graphing calculator is one of the most popular calculators in the world. Find out the important keystrokes you need to know to use the TI-84 Plus, and learn the math functions and constants that the TI-84 Plus C makes available to you. Speed up your Search . Find used Ti 84 Calculator for sale on eBay, Craigslist, Letgo, OfferUp, Amazon and others. Compare 30 million ads · Find Ti 84 Calculator faster !| https://www.used.forsale Sep 22, 2019 · September 22, 2019. Texas Instrument’s best-selling graphing calculator, the TI-84, is a woefully outdated piece of technology. Since its debut in 2004, its specs and components have remained virtually unchanged. With 24 kilobytes of RAM, a 96×64 pixel screen, and a power system that still relies on 4 AAA batteries, it has been usurped by ... Mar 26, 2016 · Scroll to the Solve function and press [ENTER]. First, set the equation to be solved equal to zero. To solve X/2 + 5 = – 2X, add 2X to both sides. The syntax of the Solve function is: Solve (expression, variable, guess). The expression is the part of an equation that has been set equal to zero. See the first screen. From the keyboard and computer-menu interface to the ability to save and share work with built-in apps, the TI-Nspire™ CX II models retain the features and functionality that make TI-Nspire™ CX graphing calculators ideal for math and science from middle grades through college. Perform computations and enter expressions, equations and ... 4,500 + results for ti 84 calculator Save this search Shipping to: 23917 Shop on eBay Brand New $20.00 or Best Offer Sponsored Texas Instruments TI-84 plus Graphing Calculator Case - Black NEW Free Shipping Brand New $29.95 zamas-2957 (39) 95.3% Buy It Now Free shipping 6+ watchers Sponsored You can use our Texas Instruments calculator buyback program to sell older models like the TI-83 Plus, TI-84, and TI-89 regular and silver editions. To get started, select the TI model above. You can then select the condition to receive your instant trade in price quote. If you are satisfied with the value, complete the checkout process.In this tutorial, I will be assuming you have never used a TI graphing calculator before. We will cover what you would need in a basic algebra or precalculus class. Detailed answers/keystrokes for all examples are at the end of each section. If you are following this tutorial on a TI-84 calculator you may have Mathprint installed. Turn Mathrprint Yellow/School condition units are School Property versions in yellow color. Screen Scratches/Dents condition are budget units in Acceptable or better condition that minor screen scratches and dents. USB Cable (USB Mini-B to USB-A) for HP-50G, TI-84+, TI-NSPIRE, and Others. $3.95, 3/$9.93, 6/$15.96, 12/$29.88. In other words, all versions of TI-84 Plus and TI-Nspire™ CX (excluding CAS) graphing calculators are allowed on the ACT ® exam. However, these calculators have the capability to add a program or app that gives the calculator CAS capabilities. CAS calculators can do calculus commands like integrals and derivatives.It's this area, right there. I'm gonna do this with a TI-84, at least an emulator of a TI-84. All we have to do is, we would go to 2nd distribution and then I would use the t cumulative distribution function so let's go there, that's the number six right there, click enter. My lower bound...Explore free software for the TI-84 Plus family of graphing calculators. Connect to multiple calculators, manage TI-Basic programs and more. Download now.The Vernier EasyData ® app from Vernier Software & Technology is simple data-collection software for the TI-84 Plus family of graphing calculators. Explore the world around you using this app. The EasyData ® app auto-launches data collection when used with Vernier EasyTemp ® sensor, and loads built-in experiments for every supported Vernier ...A dead TI-83+ calculator can be caused by poor electrical contact between the batteries and the main board. The batteries are located in the back cover. Th...Here is the list of approved calculators for the SAT ® if you want to make certain your calculator is permitted: TI-73 Explorer™ graphing calculator. TI-80 graphing calculator. TI-81 graphing calculator. TI-82 graphing calculator. TI-83 graphing calculator and TI-83 Plus graphing calculator. TI-83 Plus Silver Edition graphing calculator.Here's a website where you can run an emulator directly. You do need to get hold of ti 84 rom though. I was able to get one running pretty quickly. There's also youtube instructions on how to run the emulator on a home computer and then remote into it from the chromebook. Wolfram alpha would be the easiest at replicating your teachers instructions.The TI-84 Plus CE graphing calculator features a captivating color display that enables students to see equations, data and graphs clearly and make stronger connections. In addition to the high-visibility color innovation, the TI-84 Plus CE calculator’s other key features include: 30% lighter and thinner than earlier generation TI-84 Plus models.Dec 23, 2011 · Finding the Area Under a Standard Normal Curve Using the TI-84Visit my channel for my Probability and Statistics Videos. The TI-84 Plus is the most widely used calculator on the ACT and the best version is the TI-84 Plus CE. Click the button below to see it on Amazon. One of the most common students ask before taking the ACT is, “Can I use my calculator on the test?” The answer is yes… but be careful.Dec 23, 2011 · Finding the Area Under a Standard Normal Curve Using the TI-84Visit my channel for my Probability and Statistics Videos. instructions, examples, and functions in this guidebook also work for the TI-84 Plus. The two graphing calculators differ only in available RAM memory, interchangeable faceplates, and Flash application ROM memory. Sometimes, as in Chapter 19, the full name TI-84 Plus Silver Edition is used to distinguish it from the TI-84 Plus.Texas Instruments TI-84 Plus CE Handheld Graphing Calculator, Teal, 84PLCE/TBL/1L1/AS. S$271.52. TI-84 Plus CE has a 320 x 240-pixel color screen that displays graphs in detail. 154KB RAM and 3MB flash ROM memory help you quickly solve equations and generate graphs.The TI-84 Plus is a fairly easy, but more difficult than most, to use financial calculator which will serve you well in all finance courses. This tutorial will demonstrate how to use the financial functions to handle time value of money problems and make financial math easy.Apr 24, 2017 · Adding Logs of Base 10 or e. Press the LOG button located on the left of the 7 key. The display should now show: log (. Enter in the number that is to be logged. For example, 100, then close the parenthesis. The display should now show: log (100) Press the add button and the LOG button again and enter in the next number to be logged. Tons of TI-82s, around $10 a piece. A couple TI-84 Plus C Silver Colors for $45 a piece (I really liked these back in grade school, so definitively near the top of the list :P) A TI-Nspire with a TI-84 pad for $25. A TI-89 Titanium for $30 (negotiable). Casio's lineup is a lot more confusing to me, so I haven't looked at any of those.Texas Instruments TI-84 Plus Graphing Calculator 10-Digit LCD. TI-84 Plus Graphing Calculator 10-Digit LCD. New. An essential educational tool it is conveniently preloaded with software including Cabri Jr. interactive geometry software to give users the edge they need to succeed in the classroom. Is the TI-85 the same as the TI-84? A yes, Ti-85 is specifically designed for the basic level calculations of engineering and calculus. The graphing functions provided by this device are limited and obsolete. However, Ti-84 is equipped with advanced graphing technology.Nov 4, 2021. Do people still use TI-83?Page 46: Working With Statistics. Notes: • With each rand execution, the TI-84 Plus CE generates the same random- number sequence for a given seed value. The TI-84 Plus CE factory-set seed value for rand is 0. To generate a different random-number sequence, store any nonzero seed value to rand. It retains the same functionality as its predecessor, the TI-83+, but offers more memory, and several updated features. Keypress sequences that work on one usually work on the other. The keys on the TI-84+ are colour-coded by function. The white keys include the number keys, decimal point, and negative sign. When entering negative values, use ... For example, a TI-84 Plus and Kindle Paperwhite both sell for $99.99 on Amazon.com. The Kindle's screen is far larger and higher in resolution. It has 4 GB of memory, which blows away the storage ...Get the best deals for ti 84 at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!Jul 12, 2021 · A TI-84 Calculator, sometimes called a TI-84 Plus or a TI-84 Plus Graphing Calculator, is the gold standard right now for math, science, and statistics courses in high school (and beyond). In a nutshell, the TI 84 is a powerful calculator for students to create more complex graphs and solve higher math equations. You can use our Texas Instruments calculator buyback program to sell older models like the TI-83 Plus, TI-84, and TI-89 regular and silver editions. To get started, select the TI model above. You can then select the condition to receive your instant trade in price quote. If you are satisfied with the value, complete the checkout process. Product description. The TI-84 Plus calculator offers a built-in USB port, an improved display and preloaded applications designed to maximize student performance in numerous subjects including geometry, statistics, algebra, physics, chemistry, biology and others. Preloaded calculator software applications include topics in Algebra 1 and ...Sell TI-84 Plus Silver Edition Blue. Sell TI-84 Plus Silver Edition Dark Grey. Sell TI-84 Special Edition (Dark Pink) Sell TI-86. Sell TI-89. Sell TI-Nspire CAS.instructions, examples, and functions in this guidebook also work for the TI-84 Plus. The two graphing calculators differ only in available RAM memory, interchangeable faceplates, and Flash application ROM memory. Sometimes, as in Chapter 19, the full name TI-84 Plus Silver Edition is used to distinguish it from the TI-84 Plus. The viewing rectangle on the TI-83 is 94 pixels by 62 pixels. (A pixel is a picture element.) It is useful when graphing to have a “friendly window” in order to avoid distortion in the graph and to avoid obtaining non-integer values when using the trace function of the TI-83. In fact, q ® (ZoomStat) usually gives a "friendly window".
Tons of TI-82s, around $10 a piece. A couple TI-84 Plus C Silver Colors for $45 a piece (I really liked these back in grade school, so definitively near the top of the list :P) A TI-Nspire with a TI-84 pad for $25. A TI-89 Titanium for $30 (negotiable). Casio's lineup is a lot more confusing to me, so I haven't looked at any of those.. Kosir
Tons of TI-82s, around $10 a piece. A couple TI-84 Plus C Silver Colors for $45 a piece (I really liked these back in grade school, so definitively near the top of the list :P) A TI-Nspire with a TI-84 pad for $25. A TI-89 Titanium for $30 (negotiable). Casio's lineup is a lot more confusing to me, so I haven't looked at any of those. Mar 26, 2016 · Scientific notation on a TI-84 Plus calculator looks a little different than what you’re used to seeing in class. For example, 2.53*10 12 will display as 2.53 E 12. You can enter an expression in scientific notation by pressing [2nd][,] to type an E, but entering an expression in scientific notation doesn’t guarantee that your answer will remain in scientific notation. The TI-84 Plus graphing calculator is allowed during the entire portion of the math section of the ACT.*. The questions get more difficult as the problem number increases, so you should aim to do questions #1-20 in 30 seconds each, #20-40 in 60 seconds each, and #40- 60 in 90 seconds each, on average. You can use your TI graphing calculator to ...The TI-84 Plus is a graphing calculator made by Texas Instruments which was released in early 2004. There is no original TI-84, only the TI-84 Plus, the TI-84 Plus Silver Edition models, and the TI-84 Plus CE. The TI-84 Plus is an enhanced version of the TI-83 Plus. The key-by-key correspondence is relatively the same, but the TI-84 features ... The viewing rectangle on the TI-83 is 94 pixels by 62 pixels. (A pixel is a picture element.) It is useful when graphing to have a “friendly window” in order to avoid distortion in the graph and to avoid obtaining non-integer values when using the trace function of the TI-83. In fact, q ® (ZoomStat) usually gives a "friendly window".September 22, 2019. Texas Instrument’s best-selling graphing calculator, the TI-84, is a woefully outdated piece of technology. Since its debut in 2004, its specs and components have remained virtually unchanged. With 24 kilobytes of RAM, a 96×64 pixel screen, and a power system that still relies on 4 AAA batteries, it has been usurped by ...BOVKE Hard Graphing Calculator Case Compatible with Texas Instruments TI-84 Plus CE/TI-84 Plus/TI-83 Plus CE/Casio fx-9750GII, Extra Zipped Pocket for USB Cables, Manual, Pencil, Ruler, Black $17.99 $ 17 . 99New Listing Used Texas Instruments TI-84 Plus CE Rose Gold Edition calculator *SCREEN ISSUE* Opens in a new window or tab. Pre-Owned. $20.00. mainesgt456 (568) 100%. TI-84 Plus by Texas Instruments Description. Used TI-84 Plus – The Texas Instruments TI-84 Plus graphing calculator can be used for many function. The TI-84 Plus calculator is easy to use and is perfect for math and science classes including algebra, geometry, trigonometry, pre-calculus, calculus, physics, chemistry, and biology. This model is enhanced with Flash memory for ... Get the best deals for ti-84 plus at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!Texas Instruments TI-84 Plus Graphing Calculator 10-Digit LCD. TI-84 Plus Graphing Calculator 10-Digit LCD. New. An essential educational tool it is conveniently preloaded with software including Cabri Jr. interactive geometry software to give users the edge they need to succeed in the classroom.Sep 6, 2022 · Is TI-84 Plus still used? In the ruthlessly competitive world of technology, where companies rush the latest gadget to market and slash prices to stay competitive, the TI-84 Plus is an anomaly. Texas Instruments released the graphing calculator in 2004, and continues to sell it today. Apr 19, 2021 · 4. Use MathPrint Templates. When questions involve fractions, absolute values, or radicals, use the MathPrint templates built into the TI-84 Plus CE. Access the fraction bar by pressing the alpha key then the X,T,Θ,n key on CE models and alpha then y= on other TI-84 Plus models. You can also easily convert between fractions and decimals. .