Question

Calcule:
a) log 27
³

Answer 1

log $27^{3}$ 

3 = $27^{x}$

3 = $(3^{3}) ^{x}$

$3^{1} = (3^{3}) ^{x}$

1 = 3x 
3x = 1

x = $\frac{1}{3}$ ou $3^{-1}$