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The position x of a particle varies with...

The position x of a particle varies with time t according to the relation `x=t^3+3t^2+2t`. Find the velocity and acceleration as functions of time.

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The correct Answer is:
(a) `veca=2hati` (b) `(2t)/(sqrt(t^(2)+1))` (c) sqrt(t^(2)+1)+In[t+sqrt(t^(2)+1)]` (d) `2(t^(2)+1)^(3//2)`
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