Find the gradient of the curve at .

Answer and explanation

Correct answer: D. 52

  1. Step 1: Product rule: . Step 2. At : 52. Answer: 52. Why not the others: 20: That differentiates each factor and multiplies them, which is not the product rule. 32: That differentiates only the first factor. 57: That adds the derivative of the second factor twice.

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