Question

1. Calcule o valor de y em cada equação.

​

Answer 1

a) $\log_4y=3$

$y=4^3$

$y=64$

b) $\log_y36=2$

$y^2=36$

$y=\sqrt{36}$

$y=6$

c) $\log_9y=1$

$y=9$

d) $\log_y125=3$

$y^3=125$

$y=\sqrt[3]{125}$

$y=5$

e) $\log_2y=5$

$y=2^5$

$y=32$

f) $\log_y(\frac{1}{256})=-4$

$y^{-4}=\frac{1}{256}$

$\frac{1}{y^4}=\frac{1}{256}$

$y^4=256$

$y=\sqrt[4]{256}$

$y=4$