Solve for xxx: log(x)=12\log(x) = \frac{1}{2}log(x)=21 (base 10)
x=10x = \sqrt{10}x=10
x=5x = 5x=5
x=10.5x = 10.5x=10.5
x=110x = \frac{1}{\sqrt{10}}x=101