Question

Sendo f(x) = 2x + 4 , determine: a) f(2) – f(4)
b) f(2x – 1)

Answer 1

=> f(x) = 2x + 4

a) f(2) – f(4) = 2.2+4 - 2.4+4= 8 -12= -4

b) f(2x –1) = 2(2x-1) +4= 4x-2 +4= 4x+2