Let be a point on the curve where

MATHEMATICS · Subjective · A Level · Mathematics · Differentiation · Differentiation

Problem

Let P(x0,y0)P(x_0,y_0) be a point on the curve C:(x2−11)(y+1)+4=0C:(x^2-11)(y+1)+4=0 where x0,y0∈Nx_0,y_0\in\mathbb{N}. If area of the triangle formed by the normal drawn to the curve 'C' at PP and the co-ordinate axes is (ab)(\frac{a}{b}), a,b∈Na,b\in\mathbb{N} then find the least value of (a−6b)(a-6b).

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