TI-84 Calculator Question

[Allegro]

Hi everyone,

I'm stuck on a problem from Foerster Precalculus (1-3, #13) - I just can't figure out how to input an equation into the y= editor of my TI-84.

 

First I must enter f(x) = 4 x square root of (1-x) + 2.25 x (x-l).

I put this in y subscript 1.

 

Then I also have to enter -2 + 3f(x-6). My problem is that I can't figure out how to write f(x) in this way in the y-editor. (After I input these two equations, I am supposed to graph them and see if they match up to the graphs in the text. The topic is transformations - dilations and translations - of functions.)

 

Hopefully this was clear. If anyone could help me, that would be great!

[David-L]

To use one y function inside another use the “vars†key.

1) press vars key (left of the clear key)

2) right arrow to Y-VARS

3) press enter

4) down arrow to 1:Y1

5) press enter

This will insert function y1 into the equation you are currently editing.

[Allegro]

Thanks for the help! I figured out how to do that, but I just doing y subscript 1 - 6 won't work for some reason - it has to be f(x-6).

[Caroline]

Thanks for the help! I figured out how to do that, but I just doing y subscript 1 - 6 won't work for some reason - it has to be f(x-6).

 

Try ysub1(x-6) because you are plugging (x-6) into the original function.

[Allegro]

I will try that! Thanks so much for the help!