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Is it possible to use ContourPlot for an implicit function when another parameter is changing.

To be more precise, suppose we have a function of the form F[x,y,z]. Now for a fixed value of z=z1, we can use ContourPlot to plot the locus of points that satisfy F[x,y,z1]=0 by simply using

Contourplot[F[x,y,z1]==0,{x,xl,xh},{y,yl,yh}]

I wanted to see if there is a way to vary z1 and plot what happens.

Thanks

Ali

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Just use Manipulate:

f[x_, y_, z_] := Cos[y + x^2 z]
Manipulate[ContourPlot[f[x, y, z] == 0, {x, -5, 5}, {y, -5, 5}],
    {{z, 0}, -3, 3}]
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