Need help solving this function: Find f[g (x)] f(x) = -5x + 7?

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Need help solving this function: Find f[g (x)] f(x) = -5x + 7?

2006-11-20 04:58:54 · 5 answers · asked by TAE 1 in Science & Mathematics ➔ Mathematics

5 answers

what is the second function?

2006-11-20 05:06:09 · answer #1 · answered by davidosterberg1 6 · 0⤊ 0⤋

simple substition:

replace x with g(x)
so:

-5 (g(x)) + 7, then make sure that you substitute g(x) with it's own function. if g(x) = 2x, then it would obvioulsy be -10x + 7

Good luck!

2006-11-20 13:07:14 · answer #2 · answered by intangir_1999 1 · 0⤊ 0⤋

Replace x with whatever is in the f() bracket. In this case, it's g(x), so...

f(g(x)) = -5g(x) + 7.

2006-11-20 13:25:10 · answer #3 · answered by Anonymous · 0⤊ 0⤋

you have to know what g of x is first.

2006-11-20 13:04:25 · answer #4 · answered by Anonymous · 0⤊ 0⤋

and what's g(x)?

2006-11-20 13:02:24 · answer #5 · answered by Philo 7 · 0⤊ 0⤋