Question

if f(x)=4x+1 and g(x)=x^2-3 find a.f(g(1)) b.g(f(4))

Answer 1

a) f(g(1))
= f ( x^2 -3)
= f (1^2 -3)
= f(-2)
= 4(-2) +1
= -7

b) g(f(4))
= g (4x+1)
= g (4(4) +1)
= g (17)
= (17^2) - 3
= 286

Answer 2

thank :D