Mathematics
OpenStudy (anonymous):

how can we solve d/dy(du/dx) ?

OpenStudy (mimi_x3):

is that the product rule ?

OpenStudy (anonymous):

sorry i can not understand tha but its used in partial differrential equation

OpenStudy (mimi_x3):

post the question xD

OpenStudy (anonymous):

we have to find d/dy(du/dx) of (2x-3y)(-3x+8y)

OpenStudy (dumbcow):

im assuming $u = (2x-3y)(-3x+8y)$ then find du/dx as derivitive with respect to x, use product rule $\frac{du}{dx} = 2(-3x+8y)-3(2x-3y)$ Then take derivative of that with respect to y $\frac{d}{dy} = 16-(-9) = 25$

OpenStudy (anonymous):

thnx :)