Question

dada a função f(x)= x + 2 , calcule :
A) f (x) = -1
B) f (x) =2

Answer 1

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Caso seja:

y = - 1, ou seja, no lugar de F(x) = - 1

f(x) = x + 2
- 1 = x + 2
- 1 - 2 = x
- 3 = x
x = - 3

Resp.: x = - 3
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y = 2, ou seja, no lugar de F(x) = 2

b) f (x) = 2

f(x) = x + 2
2 = x + 2
2 - 2 = x
0 = x
x = 0

Resp.: x = 0
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