Question

Como faço para resolver Log com expoente:
A)log^3x=4 log x

Answer 1

$\log^3x=4\log x\\\\y=\log x\\\\y^3=4y\ (y=0)\\\\y^2=4\\\\y=\pm2\\\\\log x=0\\\\x=1\\\\\log x=2\\\\x=100\\\\\log x=-2\\\\x=0.01\\\\\boxed{S:\{1,100,0.01\}}$