Question

Cum se face următorul subpunct

Answer 1

$\log_{2}\log_{\frac{1}{2}}\log_{9}x=0\\ \\ \log_{\frac{1}{2}}\log_{9}x=2^{0}\\ \\ \log_{\frac{1}{2}}\log_{9}x=1\\ \\ \log_{9}x=(\frac{1}{2})^{1}\\ \\ \log_{9}x=\frac{1}{2}\\ \\ x=9^{\frac{1}{2}}\\ \\ x=\sqrt{9}\\ \\ \boxed{x=3}$
Conditia de existenta: x>0