How do I enter function into Y1 from program (TI-83 Plus)?

Question

I'm trying to write a program on my TI-83 that asks for input, inserts these values into a function, then puts this function into Y1 and graphs it.

Simple example: I want to input values for A and B into the formula, 3A+10B^2/x, then put this into Y1 and graph.
I thought that would be:
Input A
Input B
3A+10B^2/X -> Y1

That gives me: "ERR: DATA TYPE" when I try to put it in Y1.


So my question is, from a program, how do I enter a function into Y1 and graph?

Thanks for your help.

modulo_function · Accepted Answer

If you just want to enter an equation so that you can graph it then

look for the 
Y=  button on upper left, press it
type your equation starting at the cursor.  For X use the button just to the right of the green alpha
this button says 'X,T,theta,n" on it.
when done typeing the equation, just hit the "graph" button on the upper right.

use zoom option 0 for 'zoomfit'
use window to set the viewing window.


Get yourself a users manual

Anonymous · Answer

The program should be written like
:Input A
:Input B
:"3A+10B^2/X"->Y1

the only thing you missed was the quotation marks around the equation, i had to run and get my calculator to figure it out :)

you could also use the command DispGraph to display the graph after the equation is stored

Empire539 · Answer

Y1 requires the input to be a string. Therefore, what you could write:
:Prompt A,B
:"3A+10B/XâY1
:DispGraph

Make sure that that formula is correct though (as it is now, it would be the same as evaluating 3a + (10b/x)).

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How do I enter function into Y1 from program (TI-83 Plus)?

3 Answers