Question

Dada a função real definida por F(x) =x^2 -3x determine a) f (1) b)f (-1) c)f (3) d ) f (2)-3 f(-2)

Answer 1

a)(1)²-3.(1) =  -2
b) (-1)² -3.(-1) = 4
c) (3)² - 3.(3) = 0
d)

[(2)² – 3.(2)] – 3*[(-2)² – 3.(-2)]

[-2] – 3*[10]

2 – 30 = -28