Question

Dada a função f(x) = 2x^ +6x -4 calcule:
A) f(3)
B) f(-2)
C) f(0)
D) f(1/2)

Answer 1

Resposta:

f(x) = 2x^2 +6x -4 calcule:

A) f(3)

f(3)=2(3)^2+6(3)-4

f(3)=18+18-4

f(3)=32

B) f(-2)

f(-2)=2(-2)^2+6(-2)-4

f(-2)=8-12-4

f(-2)=8-16

f(-2)=-8

C) f(0)

f(0)=2(0)^2+6(0)-4

f(0)=0+0-4

f(0)=-4

D) f(1/2)

f(1/2)=2(1/2)^2+6(1/2)-4

f(1/2)=1/2+3-4

f(1/2)=1/2-1

f(1/2)= -0,5

espero que isso ajude vc