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Unformatted text preview: equation y = x 2 whose locus opens down : it is the refection o our original parabola y = x 2 about the x-axis (Figure 2.11 ). y = x 2 y = x 2 Figure 2.11: Refecting a parabola about the x-axis Finally, we can interchange the two variables; this eects a refection about the diagonal line y = x . We have seen the eect o this on an ellipse and hyperbola. For a parabola, the interchange x y takes the parabola...
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This note was uploaded on 10/20/2011 for the course MAC 2311 taught by Professor All during the Fall '08 term at University of Florida.
- Fall '08