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Hi I am trying to overlay p1 = ParametricPlot[r[t], {t, 0, Pi/2}] (this is the graph of an ellipse) onto p2= Plot3D[m[x, y], {x, 0, 5}, {y, 0, 5}] (A 3D graphic of a mountain range) to give a graphic that looks something like the graphic below. I...