Question

equação exponencial!
Alguem sabe? ​

Answer 1

c)

$(\frac{3}{4})^x = \frac{8}{2} \Leftrightarrow \\\\(\frac{3}{4})^x = 4 \Leftrightarrow \\\\x = log_{\frac{3}{4}}4 \Rightarrow\\ \\\boxed{x \approx -4{,}82}$

d)

$3^x = \sqrt[4]{27} \Leftrightarrow\\\\3^x = \sqrt[4]{3^3} \Leftrightarrow\\\\3^x = 3^{\frac{3}{4}} \Rightarrow\\\\ \boxed{x = \frac{3}{4}}$