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Unformatted text preview: y-axis. In particular, this gives us a second ocus/directrix pair or the curve: F ( ae, 0) and x = a/e . Equation ( 2.15 ) orces | x | a : thus there are no y-intercepts: the curve has two separate branches, one opening to the right rom ( a, 0) and the other opening to the let rom ( a, 0); these are the vertices o the hyperbola. The distance 2 a between the vertices is called the transverse axis o the hyperbola. As | x | grows, so does | y | : in each branch, y ranges over all values, with x decreasing to x = a in the...
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- Fall '08