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Algebra

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Evaluating Functions using Exponent Laws

ALGEBR-R0FAR0

Given that $f(x)={ 2 }^{ x }$, which of the following is NOT true?

A

$f(1)=2$

B

$f(0)=1$

C

$f(-1)=-2$

D

$f(-2)=\frac { 1 }{ 4 } $