Compute \log_{1/2} (16*5*1/10).
\(\quad \log_{1/2} \left(16\cdot 5 \cdot \dfrac1{10}\right)\\ = \log_{1/2} 8\\ = \dfrac{\log_2 8}{\log_2 \dfrac12}\\ =\dfrac3{-1}\\ = -3\)
