Question

sendo log 2 = 0,3 calcule $log_{2} 50$

Answer 1

$log_250=\frac{log50}{log2}=\frac{log10+log5}{log2}=\frac{log10+log\frac{10}{2}}{log2}=\\ \\ =\frac{log10+log10-log2}{log2}=\frac{1+1-0,2}{0,2}=\frac{1,8}{0,2}=9$