Question

chain rule!!!!

Let f(x) = x^3 + 6 x and g(x) = x^2 + 5.

Then g(f(x)) = x^A + B x^C + D x^2 + E

they want me to find a,b,c,d,e

Answer 1

i think i use the chain rule?

Answer 2

the chain rule is used in calculus...you don't need calculus here

Answer 3

wait so all i need to do is FOIL?

Answer 4

do the composition and multiply it out

Answer 5

what is FOIL? Anw they wnat to find g(f(x)) So which means you will substite x= f(x) into g(x)

g(f(x))= (x^3+6x)^2 +5
= x^6 +12 x^4 + 36x^2 +5

Answer 6

then i just use the chain rule?

Answer 7

this is applied calculus so it would have to bethe chain rule

Answer 8

calculus is not needed for this problem.

Answer 9

I agree, this is just a function problem.

Answer 10

you might want to look up what the chain rule is