Question

Se f(x) = 9 elevado a x, então o valor de f(2,5) é?

Answer 1

$f(x)=9^x\\ \\f( \frac{5}{2} )=9^{ \frac{5}{2} }\\ \\f( \frac{5}{2} )= \sqrt{9^5} \\ \\\boxed{f( \frac{5}{2} )=243}$

Answer 2

$log _{3} x^{-2/3} + 2^{x + y} - \frac{3}{4} + \sqrt[5]{y ^{-z} }$