# Top 25 Functions TI 84 Graphing Calculator

## TI 84 Calculator Graphing Function Basics Y= linear function

Graphing Basics on the calculator starts with basic graphing. For the TI 84 calculator, you’d want to start with a linear function. The example shown is y=2x-1. It’ll be easy for you to get started and you can progress to more complicated functions to graph later. Also, you can find quite a bit of information about curvilinear graphs, such as maximums, minimums, x-intercepts, and points of intersection with other functions.

But, more on that later. For now, let’s just start with a simple linear function.

## Solve Matrix / System of Equations with Reduced Row Echelon Form (RREF)

To solve a matrix, follow the instructions on this next video. You can also use this to solve a system of linear equations. These also go by the name simultaneous equations. If any of the above describe what you need to solve, here you go.

## Convert from Degrees to Radians TI 84 Calculator

Some of you need to convert from degrees to radians. Here it is.

## Convert Radians to Degrees TI 84 Calculator

Ok, here’s the converse of the above video: converting from radians to degrees.

## Difference Twixt Negative and Minus on TI 84

There is a huge difference between the minus sign and the negative sign. The minus is for subtraction. The negative sign is for negative numbers. If you ever encounter an error related to this, please watch this video. May you never encounter that error again.

## Zoom: Zbox and Standard

When you’re graphing, you might need to change the area the calculator displays. You can use the ZBox function to do this. Also, use ZStandard to return to Zstandard.

## Zoom: ZTrig

If you’re graphing trig functions, this helps. It might work better in radian mode.

## ANS key (second (-) )(recalls last value)

You’ll want to use this if you want to recycle values. Works great for physics, chemistry, and higher level math.

You can also do this using the up arrow key and ENTER. Does the same thing.

## STO key (STO stores a specific value)

This works well for storing a value you’ll need to access. If you need to access the same value multiple times, this is for you. Rather than typing in a lot of digits, you just recall the letter.

For those of you who are into programming your TI 84, this is a godsend.

## logBASE Log of Any Base TI 84 Calculator

If you’re using logs or natural logs, this is fantastic. You can change the base of your log functions.

## Conic Sections APP Introduction

Need to remember the vertex or standard form of conic sections? This video is for you.

## Least Common Multiple LCM

Want to find the least common multiple of two numbers? Need to find the LCM? This helps you with adding or subtracting fractions? Watch this video.

## Greatest Common Divisor / Denominator GCD

You can use this to factor fractions much more easily.

## Absolute Value ABS TI 84 Calculator

This can be used to great effect graphing absolute value equations.

## Pi, e, i Keys TI 84 Calculator Special Keys

If you want to use pi, e, or i, here you go.

## Summation of Arithmetic or Geometric Series

Working with arithmetic or geometric series? Here’s your help.

## Function Minimum or Maximum

You can find the min or max of your graphed function. Just watch the instructions. It’s not as intuitive as you may think.

## Periodic Table

In chemistry? Want to know  spdf of an element? Periodic trends? Want the number of protons, neutrons, and electrons of a specific atom? Look no further.

## Shortcut for Arithmetic or Geometric Series

Just so you can access the function for arithmetic and geometric series faster.

## Derivatives at a point and definite integrals

You want to do derivatives and integrals? Here you go.

## By Martin

Martin McSweeney is a National Merit Finalist, Pomona College Graduate, and member of MENSA. He has worked at the Center for Talented Youth (Loyola Marymount University campus); Upward Bound (Harvey Mudd campus); various test prep companies; and Whittier High School. Now, Martin helps students of all abilities improve their relationship with math.