Question

Sendo f dada pela lei f(x)=4x-1, calcule.a) 2f(3)+f(0)b)f(-2).f(1)

Answer 1

2f(3) + f(0)
=2(4×3 - 1) + (4×0 - 1)
= 2 ( 11 ) + (-1)
= 22 - 1
= 21

f(-2) . f(1)
= (4× -2 - 1) . (4 × 1 - 1)
= -9 . 3
= -27