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Mathematics

2 answers:

alekssr [168]3 years ago

4 0

Answer:gchvbunonion

Step-by-step explanation:

kykrilka [37]3 years ago

3 0

Answer:

Yjtccjtchtcychy

Step-by-step explanation:

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Gnesinka [82]

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Step-by-step explanation:

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3 years ago

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If f(x)=2^x find x if f(x)= 1/4

Sergeeva-Olga [200]

$\bf ~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ f(x)=2^x~\hspace{7em} \begin{cases} f(x)=\cfrac{1}{4} \end{cases} \qquad \qquad \cfrac{1}{4}=2^x\implies \cfrac{1}{2^2}=2^x \\\\\\ 2^{-2}=2^x\implies \stackrel{\textit{if the bases are the same, the exponents must also be the same}}{-2=x}$