1=.5x^(-1/2)
x=?
\(1=.5x^{(-1/2) }\\ 1=\frac{0.5}{x^{(+1/2) }}\\ x^{(+1/2) }=0.5\\ (x^{(+1/2) })^2=0.5^2\\ x=0.25\)
