Question

URGENTE

Sendo f a função dada pela lei f(x) = 4x+1, calcule:

a) f(-2) • f(1) =

b) 2 • f(3) + f(0) =

c) f(3) - f(2) =

d) 3 • f(4) + f(5) =​

Answer 1

Resposta:

a) f(-2) • f(1) = -35

b) 2 • f(3) + f(0) = 27

c) f(3) - f(2) = 4

d) 3 • f(4) + f(5) =​ 72

Explicação passo a passo:

a) f(-2) • f(1) = -35
f(-2) = (4•-2)+1
f(-2) = - 8 + 1
f(-2) = - 7

f(1) = (4•1) + 1
f(1) = 4 + 1
f(1) = 5

-7 • 5 = -35

b) 2 • f(3) + f(0) = 27

2 • f(3) = (4•3) + 1
2 • f(3) = 12 + 1
2 • f(3) = 13
2 • 13 = 26

f(0) = (4•0) + 1
f(0) = 0 + 1
f(0) = 1

26 + 1 = 27

c) f(3) - f(2) = 4

f(3) = (4•3) + 1
f(3) = 12 + 1
f(3) = 13

f(2) = (4•2) + 1
f(2) = 8 + 1
f(2) = 9

13-9 = 4

d) 3 • f(4) + f(5) =​ 72

3 • f(4) = (4•4) + 1
3 • f(4) = 16 + 1
3 • f(4) = 17
3 • 17 = 51

f(5) = (4•5) + 1
f(5) = 20 + 1
f(5) = 21

51+21 = 72