Question

seja a função F: IR,definida por f(x)= x2-4 calcule f (2) f(-1) f(0) f(1)

Answer 1

f(2)= 2.2-4
= 4-4
= 0

f(-1)= (-1).2-4
= -2-4
= -6

f(0)= 0.2-4
= 0-4
= 4

f(1)= 1.2-4
= 2-4
= -2