Let f be a function of two variables and suppose that all the first order partial derivatives of f exist and are continuous at all points. Show that for the composite function w=xyf(xz,yz) the following equation holds:
x(dw/dx)+y(dw/dy)-z(dw/dz) = 2w

Question

anonymous · Answer

are u comparing the derivative form? for example of w in comparison to x? 

before i answer the question, because there are many ways to do this, are u in high school or calc 1 university?

anonymous · Answer

Cal 3 university. This is a partial derivatives question

anonymous · Answer

kk, give me  min to type it out.

anonymous · Answer

i just finished calc 3, had my exam yesterday haha

anonymous · Answer

Really? Mine is tomorrow at 9am

anonymous · Answer

good luck!!!! mine was pretty tough!

anonymous · Answer

I'm expecting it to be difficult.
I understand most of the vector geometry stuff. Its the Taylor series stuff and implicit partial differentiation that is getting me.

anonymous · Answer

Thanks!

anonymous · Answer

this is a one slide ppt on partial derivatives that might help u that my prof posted up.

anonymous · Answer

see if that helps, cuz it would be extremily long to write out the proof.

anonymous · Answer

I'll give it a shot. Thanks.

anonymous · Answer

if it doesnt work let me know we'll work it out here.

anonymous · Answer

hey js lets chat

anonymous · Answer

we should get lik a really big chat group..... luv that song

anonymous · Answer

kk luv that

anonymous · Answer

hey js chat with us

anonymous · Answer

why dont u just chat in the group chat instead of in the problem chats?

anonymous · Answer

idk  but we could do it that way 2

anonymous · Answer

Got it sorted. Thanks!