Re: Plotting g(x,y) along contour of f(x,y)

*To*: mathgroup at smc.vnet.net*Subject*: [mg57122] Re: Plotting g(x,y) along contour of f(x,y)*From*: gnalle at ruc.dk (Niels L. Ellegaard)*Date*: Mon, 16 May 2005 21:35:20 -0400 (EDT)*References*: <d69v5k$95v$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

gnalle at ruc.dk (Niels L. Ellegaard) writes: > I have two functions u(x,y) and phi(x,y) defined by > u = Cos[x] + 0.3*(y-0.1*Cos[x])^2; > phi=0.36 (y - 0.1 Cos[x])^2 + (-Sin[x] + 0.06 (y - 0.1 Cos[x]) Sin[x])^2; > > For some limited parameterinterval I can invert u with respect to y to > get a function yy(x,uu) fulfilling I made a mistake in my first post. The truth is that I need to invert with respect to x to get a function xx(y,u) fulfilling u(xx(y,u),y) = u(x,y) ; -Pi<x<0 Now I wish to plot phi(x,yy(x,u)) for a few vallues of u I am sorry about this mistake Niels -- Niels L Ellegaard http://dirac.ruc.dk/~gnalle/