Question 951370
f(x) = x^-1 + x^0.5
f'(x) = {{{-x^-2 + 0.5x^-0.5}}}
= {{{1/(2sqrt(x)) - 1/x^2}}}
= {{{x*sqrt(x)/(2x^2) - 1/x^2}}}
= {{{(x*sqrt(x) - 2)/2x^2}}}