Considere a função f(x) = 2x+6
a) Calcule f(0), f(1) e f(1/2)
b) Quanto vale x, se f(x) = 2 ?
c) Para que valor de x temos f(x) = 0 ?
f(x) = 2x + 6
f(0) = 2.0 + 6 = 6
f(1) = 2.1 + 6 = 8
f(1/2) = 2/2 + 6 = 7
2 = 2x + 6
2x = -4
x = -2
2x + 6 = 0
2x = -6
x = -3
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Verified answer
f(x) = 2x + 6
f(0) = 2.0 + 6 = 6
f(1) = 2.1 + 6 = 8
f(1/2) = 2/2 + 6 = 7
2 = 2x + 6
2x = -4
x = -2
2x + 6 = 0
2x = -6
x = -3