Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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I wrote a program for a math project on a TI 84 plus calculator using conic sections. the calculator will then draw the program and make a picture. at the top of the program our instructions say to put the following commands- clrdraw, zoomsquare, and axes off.i put those commands at the top and my program was executing fine. now all the sudden it's telling me my zoom is "undefined" and i don't know what that means, and my project is due in 8 hours! please help me!

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Well considering this was posted 2 years ago idk if you still want an answer..

Posted on Aug 12, 2010


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How to solve trig functions using ti-83 plus

Your best bet would be trying a math package on - you can usually find something that does what you want there. You'll need a cable and the software to download these programs to your calculator. Here's a link to the trig section:

TI 83 84 Plus BASIC Math Programs Trigonometry ticalc org

Jun 01, 2014 | Texas Instruments TI-83 Plus Calculator

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You can't simply enter 7x+9=30 into the calculator, there is a way to calculate what the x is but its been a few years since I've done these..

Oct 03, 2008 | Texas Instruments TI-83 Plus Calculator

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Use the >Frac command in the MATH menu. For example, to calculate 1/2 + 1/3, press 1 / 2 + 1 / 3 MATH ENTER ENTER .

Mar 04, 2013 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do you convert decimal complex numbers in TI-84 (OS 2.53) to fractions?

I answered a similar question not long ago and here is what I wrote:

Not quite true for OS 2.56 MP for the TINspire with Ti84 keyboard. To convert a complex decimal value, that you just calculated, into a fraction use the command Math [1:>Frac] and it will convert the value to complex fractions
See below.

I suggest you upgrade the OS to version 2.55 MP.

Mar 06, 2012 | Texas Instruments TI-84 Plus Silver...

2 Answers

How do I graph equations like x^2 + y^2 = 9 on my TI84 Plus silver calculator?

This is the equation of a circle centered on (0,0) and with radius r=3. You can draw it as a conic section.For that you will need the conics application. Look for it on
You can also draw it as two branches: y1=+ square root (9-x^2) and y2=-square root(9-x^2). The two parts may not overlap at the points on the the x-axis, but if you are willing to accept the calculator limitations you will have your graph.

May 21, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

How do I use the TI 84 to solve for the x root? X= 18 ??

Press MATH to get to the MATH menu. There you'll see two different root functions there. Square root is on the keyboard as the 2ND shift of the square key.

May 18, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

Is it possible to graph the locus of Z on the TI 84

Define z=x+iy
Substitute in the equation [x+iy -1-i|=5
SQRT ((x-1)^2+(y-1)^2)=5
Raise to the second power (square) (x-1)^2+(y-1)^2=25
This is the equation of a circle of center (1,1) and radius 5

To graph it isolate y as +/- SQRT (25-(x-1)^2)
or use the CONICS application, which you can download from
You can also use the Cabri Jr Geometry application or the Draw menu then the circle(.

Apr 10, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

I'm trying to graph a circle on my TI-83 Plus. 1.) I don't know the way to trick the calculator into graphing the circle 2.) When I try to graph I get 'ERR:WINDOW RANGE' I don't want to use draw and i...

Here is the link to post where I show several ways to draw a circle. If you do not have the conics applications download and instakk it on the calculator.
You can also use the cabri Jr application downloadable from This application is dedicated to geometry.

Apr 10, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

I do not know how to find the greater than and equal to sign on the ti-84 silver plus calc

press 2nd, then math. It will bring you to a menu with =, not equal, >, <, and that kind of stuff

Feb 28, 2009 | Texas Instruments TI-84 Plus Silver...

1 Answer

I need to know how to use the fraction key on a ti-84 plus silver edition

Press the MATH key to display the Math menu.

>Frac converts a decimal value to a fraction.
>Dec converts a fraction to a decimal value.

Jan 27, 2009 | Texas Instruments TI-84 Plus Calculator

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