Question

let f(x)=1-2x^2 and g(x) = x+1 compute the following (f o g)(-1)

Answer 1

the answr is 1

Answer 2

I got the correct answer I just need to make sure my steps are correct.

Answer 3

fg(x) is also (f o g)(x) but I'll just write it my way.
\[fg(x)=-2x^{2}-4x-1\]\[fg(-1)=-2(-1)^{2}-4(-1)-1\]\[fg(-1)=1\]

Answer 4

where are you getting the 4

Answer 5

f(g(x)) = 1-2(x+1)^2 = 1-2*0^2 =1

Answer 6

the steps are above

Answer 7

ok I got it thanks.