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Beyond Horizon Set 2 Paper 1 · Q2

Paper 1Calculus

The least possible value of the gradient of the curve y=(3x+b)(x−b)2y=(3x+b)(x-b)^2 at the point where x=2x=2, as bb varies, is:

A−814-\frac{81}{4}
B−64-64
C−364-\frac{36}{4}
D54\frac54
E5316\frac{53}{16}

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