Recent content by east

ok, thanks to RVG who explained me where to look for the solution I think I have solved it: (i): Dz/Dx=DF/Du*DU/Dx+DF/Dw*DW/Dx+DF/Dx (ii) Dz/Dx= -2x(4y-1)+3w2y2-2u Is it right? it is fairly easy once discovered which formula to use (if I've used the right one of course)

sadly no :( I have to take a test of basic math knowledge and we only have some notes to prepare... but ty for the hint of the chain rule :)

Yes, I've read the rules, sorry. the point is that I don't know where to stard with :( more than the just the solution I would like some references to books or links where I can study the problem.. thx again

Hello everybody, I am trying to solve this problem but I can't find an answer reading my book :( Let z=F(u,w,x) where u=f(x,y) and w=g(x,y) (i) find a general expression for Dxz (ii) verify your answer in the case where F(u,w,x)=w3-2ux, f(x,y)=4xy-x+1 and g(x,y)=y+xy2 Many thanks