Question

qual a resposta de f(g(h(x))):

Answer 1

Temos y=ax+b⇒3=0.x+b⇒b=3   e  1=a.1+3⇒a=-2 logo h(x)=-x+3

de  y = ax²+bx+c  e V(0,0) temos c=0     x = -b/2a = 0 (do vértice)  ⇒b=0

P(1,1)∈g(x)⇒1=a.1⇒a=1     logo g(x)=x²

g(h(x))=g(-2x+3)=(-2x+3)²=4x²-12x+9

f(g(h(x)))=f(4x²-12x+9)  =  1 /  (4x²-12x+9)