Question

Funçao exponencial

calcule:

a) $(\frac{3}{4} )^-2$

b) $(\frac{3}{4} )^2$

Answer 1

$a) ( \frac{3}{4} )^{-2}= \frac{1}{ (\frac{3}{4})^{2} } = \frac{1}{ \frac{9}{16} } = \frac{16}{9} \\ \\ b) ( \frac{3}{4} )^{2} = \frac{9}{16}$

Espero ter ajudado.