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Assume a rectangular coord system has its origin at the center of an elliptical planetary orbit and that the coord system x axis lies along the major axis of the ellipse. Show that the equation for the ellipse is given by x^2/a^2 + y^2/b^2 =1.

where a and b are the lengths if the semi-major axis and the semi-minor axis, respectively.

b.)

using the results from a, prove the area of an ellipse is given by A=(pi)ab.

Im am completely lost right now. Any ideas?

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# Homework Help: Astrophysics - elliptical orbit proof help.

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