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Gradients of Secants - Questions

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Question 1
32747

\(P(x, f (x))\) and \(Q(x + h, f (x + h))\) are points on the the curve \(f (x) = 2x^3 +1\). Show that the gradient of the secant \(PQ\) is \(6x^2 + 6xh + 2h^2\).

True

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