Question

dada a função quadratura f(x)=5x-3x+2, determine
a)f(1)
b)f(-1)
c)f(-2)
d)f(2)​

Answer 1

Olá,

Basta substituir:

a)

$f(1) = 5 \times 1 - 3 \times 1 + 2 \\ f(1) = 5 - 3 + 2 \\ f(1) = 4$

b)

$f ( - 1) = 5 \times ( - 1) - 3 \times ( - 1) + 2 \\ f ( - 1) = - 5 + 3 + 2 \\ f ( - 1) = 0$

c)

$f ( - 2) = 5 \times ( - 2) - 3 \times ( - 2) + 2 \\ f ( - 2) = - 10 + 6 + 2 \\ f ( - 2) = - 2$

d)

$f ( 2) = 5 \times 2 - 3 \times 2 + 2 \\ f ( 2) = 10 - 6 + 2 \\ f ( 2) = 6$

Espero ter ajudado :-) Bons estudos.