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A line `L` is perpendicular to the curve `y= (x^2) / 4 - 2` at its point `p` and passes through `(0, -1)`. The coordinates of the point p areA. `( 2 , -1)`B. (6 , 7)C. `(0 , -2)`D. (4 , 2) |
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Answer» Correct Answer - D Let the point is `(h , (h^(2) - 8)/(4))` , equation of normal `( y (h^(2) - 8)/( 4)) = (-2)/(h) (x - h)`, `because (10 , -1)` lies on it `h^(3) + 4h - 80 = 0` |
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