Question

f ( x ) = 2x²
f ( x ) = x ²- 2x
f ( x ) = x ²- 4 x + 4
f ( x ) = x²- 3

qual o valor ??
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Answer 1

Resposta:

f(x) = x² – 2

a)

f(–1) = (–1)² – 2

f(–1) = 1 – 2

f(–1) = –1

b)

f(1) = 1² – 2

f(1) = 1 – 2

f(1) = – 1

c)

f(0) = 0² – 2

f(0) = – 2