Question

O valor da incógnita x na igualdade log9 √108 = x é...?

Answer 1

$log_9(\sqrt{108})=x$

$log_9(108)^{\frac{1}{2}}=x$

$\frac{log_9(108)}{2}=x$

$log_9(108)=2x$

$log_9(9*12)=2x$

$log_9(9)+log_9(3*4)=2x$

$1+log_9(9^{\frac12})+log_9(4)=2x$

$1+\frac12+log_9(4)=2x$

$log_9(4)\approx0.631$

$1.5+0.631=2x$

$2.131=2x$

$x=1.0655$