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Question
secondary 4 | E Maths
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![Jun kai](https://ask.manytutors.com/assets/img/robot4.png)
Can anyone explain part (ii) cos for my working (may be wrong) is:
a=dv/dt=2e^(2t)-4e^t
Hence, da/dt=4e^(2t)-4e^t
But how it shows that acceleration of particle is always positive since we do not know the final da/dt value is positive or negative
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