Find-U-x-U-xy-U-yy-Given-that-U-x-3-y-siny-

Question Number 7935 by tawakalitu last updated on 24/Sep/16

F i n d U_{x}, U_{x y}, U_{y y}

G i v e n t h a t :

U = x^{3} y - s i n y

Commented by prakash jain last updated on 26/Sep/16

\frac{\partial U}{\partial x} = 3 x^{2} y

\frac{\partial}{\partial y} (\frac{\partial U}{\partial x}) = 3 x^{2}

\frac{\partial U}{\partial y} = x^{3} - \cos y

\frac{\partial}{\partial y} (\frac{\partial U}{\partial y}) = \sin y

Commented by tawakalitu last updated on 26/Sep/16

I s c o r r e c t t h a n k y o u .

Answered by prakash jain last updated on 02/Oct/16

answer in comments