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# I will paste the question below and add my understanding so far and where I think I'm confused /> Attachment 1 Attachment 2 ATTACHMENT PREVIEW Download attachment Screen Shot 2019-08-04 at 9.51.38 PM.png G. 7. a) Here's a piece of the surface 2 = 4 - ( ) + (3 ) : Clear [f, x, y, z, r, t, surfaceplotter]; f [x_, y_] = 4 - (x/2)^2 + (y/2)^2; x[r_, t_] = r Cos[t]; y[r_, t_] = r Sin[t]; z[r_, t_] = f[x[r, t], y[r, t]]; surfaceplotter[r_, t_] = {x[r, t], y[r, t], z [r, t]}; surface = ParametricPlot30 [surfaceplotter[r, t], {r, 0, 2), {t, 0, 2 Pil, ViewPoint -&gt; CMView, PlotRange -&gt; All, Boxed -&gt; False, AxesLabel -&gt; {&quot;x&quot;, &quot;y&quot;, &quot;z&quot;}] 2 5.0 24.0 1 3.5- 3.0 A light beam emanates from {-1, 1, 6} and strikes the surface at: hit = surfaceplotter [1, 1.2] [0 . 362358, 0.932039, 4.18435} ATTACHMENT PREVIEW Download attachment Screen Shot 2019-08-04 at 9.51.52 PM.png Here's a look: lightsource = {-1, 1, 6}; Show [ surface, Vector [hit - lightsource, Tail -&gt; lightsource, VectorColor -&gt; Red], PlotRange -&gt; All] X 5 4 3 - 2 Your job is to plot the vector on which the reflected light moves.

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