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Is The equation of tangent yy1 = 2a(X+x1) at (x1, y1) is valid only for y square = 4ax or valid for all parabolas? |
| Answer» Is The equation of tangent yy1 = 2a(X+x1) at (x1, y1) is valid only for y square = 4ax or valid for all parabolas? | |