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Unformatted text preview: 1. r = 3 2. r = 3 cos 5 ex. Construct a polar equation for a circle of radius a with its center at x = a;y = 0. 6 ex. Graph the polar curve: r = cos 2 If you graph polar equations by plotting points, you will nd it helpful to know the symmetry in polar graphs. 7 Symmetry in Polar graphs: 1. If ( r; ) is a point on the graph and ( r; ) is also a point on the graph, then the polar graph is symmetric with respect to the x axis (polar axis). 2. If ( r; ) is a point on the graph and ( r; ) is also a point on the graph, then the polar graph is symmetric with respect to the pole . 3. If ( r; ) is a point on the graph and ( r; ) is also a point on the graph, then the polar graph is symmetric with respect to the y axis (the vertical line = = 2). Tonights homework: sketch polar graphs. 8...
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 Spring '08
 Bonner
 Calculus, Polar Coordinates

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