Question

obtenha a base x do logaritmo, para que seja verdadeira a sentença 1+log x 16 =-1

Answer 1

$1+log_x16=-1\\\\ log_x16=-2\\\\ x^{-2}=16\\\\ \frac{1}{x^2}=16\\\\ x^2=\frac{1}{16}\\\\ x=\pm\frac{1}{4}\\\\ x=\frac{1}{4}$