Respostas

2013-10-02T15:10:42-03:00
A)f(x)=4x-x
f(-2)=4x-x
y=4.(-2)-(-2)
y=-8+2
y=-6

B)f(1)
y=(2.1)-1
y=2-1
y=1

C)f(0)
y= 4.0-0 = 0

D) y=-6+1-3+0
y= -8
1 5 1