find the indicated partial derivative for each function.
fx, fy, fxx, fyy, fxy, fyx
a) f(x,y) 3x^4y + 2xy^2- 5xy+8x-9y

Question

find the indicated partial derivative for each function. 
fx, fy, fxx, fyy, fxy, fyx
a) f(x,y) 3x^4y + 2xy^2- 5xy+8x-9y

owlfred · Answer

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

anonymous · Answer

fx= 12x^3y+2y^2-5y+8;
fy=3x^4+4xy-5x-9;
fxx=$$\delta fx/\delta x$$=36x^2y;
fyy=4x;
fxy=d(fx)/dy =12x^3+4y-5;
fyx=12x^3+4y-5;

anonymous · Answer

fyx = fxy , mixed partial derivatives

anonymous · Answer

you get a nice tree when you start doing f xxx , and mixed partial derivatives