Question

Find derivative of -sqrt(y)/sqrt(x) and double derivative of sqrt(x)+sqrt(y)=1

Answer 1

derivative of \[-\sqrt{y}/{\sqrt{x}}\] and double derivative of \[\sqrt{x}+\sqrt{y}=1\]
Than answers to the problems are supposed to be same but it's not happening for me :-(

Answer 2

derivative of -sqrt(y)/sqrt(x) is

[sqrt(x)*(-1/2sqrt(y))*y'-[(-sqrt(y)]*(1/2sqrt(x))] / [sqrt(x)]^2

Answer 3

http://www.wolframalpha.com/input/?i=Differentiate+-sqrt%28y%29%2Fsqrt%28x%29+with+respect+to+x

http://www.wolframalpha.com/input/?i=Differentiate+sqrt%28x%29%2Bsqrt%28y%29%3D1+with+respect+to+x