Question

1) Dada f (x) = x^2, calcule f (3); f (-2); f (a); f (√x) y f (x + h).

2) Dada f(x) = √x , calcule f (4); f (x^2) y f (a^2 + h^2).

Answer 1

1)
f(3) = 3^2 =9
f(-2) = (-2)^2 =4
f(a)= a²
f(√x) = (√x)^2=x
f(x+h) = (x+h)² =x² + 2xh + h²

2)

f(4) = √4 = 2
f(x^2) = √x^2 = x
f(a^2 + b^2) = √(a^2+b^2)