Ok i know how to solve compositions when Im provided with x

Here I am dealing with f of g of h

f(x) = 2x-2

g(x) = x^2

h(x) = 9-x

so its f(g(h(x)

But how do i start without an x value?

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- September 13th 2011, 01:18 PMGaDoomZQuestion about Composition Functions
Ok i know how to solve compositions when Im provided with x

Here I am dealing with f of g of h

f(x) = 2x-2

g(x) = x^2

h(x) = 9-x

so its f(g(h(x)

But how do i start without an x value? - September 13th 2011, 01:23 PMPlatoRe: Question about Composition Functions
- September 13th 2011, 01:34 PMGaDoomZRe: Question about Composition Functions
Oh I see haha, guess that was a stupid mistake on my part. Guess I just had to leave X as X...

- September 13th 2011, 01:39 PMGaDoomZRe: Question about Composition Functions
Ok how about

f(x) = √x

g(x) = 7√1-x

I tried √7-x, √x, √7x they were all wrong - September 13th 2011, 01:55 PMHallsofIvyRe: Question about Composition Functions
- September 13th 2011, 02:10 PMGaDoomZRe: Question about Composition Functions
When I submitted both of those, it was marked as wrong...

even after simplfying it down to

√7-x and 7-√x - September 13th 2011, 02:15 PMPlatoRe: Question about Composition Functions
- September 13th 2011, 02:50 PMGaDoomZRe: Question about Composition Functions
Nope, still didn't work... I am out of submissions now :(

- September 13th 2011, 04:17 PMGaDoomZRe: Question about Composition Functions
- September 13th 2011, 04:28 PMPlatoRe: Question about Composition Functions
- September 13th 2011, 05:39 PMGaDoomZRe: Question about Composition Functions
- September 13th 2011, 05:56 PMPlatoRe: Question about Composition Functions
Then that is a totally incompetent program or you do not know how to use it. I suspect that you are not using enough grouping symbols.

Look at my LaTeX code:

7\sqrt{1-7\sqrt{1-x}} this gives .

Note how carefully the various parts are grouped together using grouping symbols.

Does that program allow LaTeX coding?

If so the you can*copy and paste*from here.

In any case,**you need to contact the program administrator**to discuss these concerns. - September 13th 2011, 06:30 PMGaDoomZRe: Question about Composition Functions
You are correct plato, I was not inputting the second 7 properly. Thank you again