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Practice question

MCQ

Question

A particle is moving in a straight line and its distance x from a fixed point on the line at any time t seconds is given by, x = t⁴/12 – 2t³/3 + 3t²/2 + t + 15. At what time is the velocity minimum?

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Explanation

Here's the idea in simple terms: using formula we get 3. Calculation gives this directly, check steps: apply rule, substitute values, simplify to get 3.

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