Re: ContourPlot and lines vrs. 8.0

*To*: mathgroup at smc.vnet.net*Subject*: [mg116281] Re: ContourPlot and lines vrs. 8.0*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Wed, 9 Feb 2011 02:12:33 -0500 (EST)

Show[ContourPlot[(\[Alpha]h1 xh-xh^2)+(\[Alpha]h2 xf-xf^2), {xh,0,10},{xf,0,10},Contours->250], ContourPlot[xf-(\[Alpha]h1-xh)==0,{xh,0,10},{xf,0,10}]] Bob Hanlon ---- kristoph <kristophs.post at web.de> wrote: ============= Hi, I would like to plot a contour plot of two different functions. One of them is a line in the contour plot. The problem I have is that the plot only shows the line and only ONE curve of the other function. What I would like to have is a usual contour plot of the function and the line of the other function. Below you find the code of the contour plot: \[Alpha]h1 = 16; \[Alpha]h2 = 16; ContourPlot[{(\[Alpha]h1 xh - xh^2) + (\[Alpha]h2 xf - xf^2), xf - (\[Alpha]h1 - xh) == 0}, {xh, 0, 10}, {xf, 0, 10}, Contours -> 250] Here is the contour plot of the first function only. It would be great to have this plot with only one line expressed by the function xf - (\ [Alpha]h1 - xh) == 0. ContourPlot[{(\[Alpha]h1 xh - xh^2) + (\[Alpha]h2 xf - xf^2)}, {xh, 0, 10}, {xf, 0, 10}, Contours -> 250] Thanks for help, Kris