Focal Widths Using polar equations, derive formulas for
Chapter 8, Problem 8.1.1.403(choose chapter or problem)
Focal Widths Using polar equations, derive formulas for the focal width of an ellipse and the focal width of a hyperbola. Begin by defining focal width for these conics in a manner analogous to the definition of the focal width of a parabola given in Section 8.1.
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