Respostas

2013-09-26T19:39:23-03:00
A) f(1)=-2.1+3
f(1)=1

b) f(0)=-2.0+3
f(0)=3

c) f(x)=3
3=-2x+3
3-3=-2x
0=-2x
 \frac{0}{-2} =x
x=0
1 1 1