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1.9.12 Product rule (A-level only)

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Question 23

The displacement, sss millimetres, of a robotic arm at time ttt seconds is given by the equation

s=(0.35t−4.2)e0.4t s = (0.35t - 4.2) e^{0.4t} s=(0.35t−4.2)e0.4t

Determine, using calculus, the exact value of ttt for which the displacement has a stationary point.

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1.9.12 Product rule (A-level only) Questions

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