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1.7 Integration

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Question 18

A research probe measures the rate of accumulation of cosmic dust, DDD, on a satellite's surface over time, ttt, in years. The rate is modelled by the function:

dDdt=58t4−27t5+3 \frac{dD}{dt} = \frac{5}{8}t^4 - \frac{2}{7t^5} + \sqrt{3} dtdD​=85​t4−7t52​+3​

Find the general expression for D(t)D(t)D(t) by evaluating:

∫(58t4−27t5+3)dt \int \left( \frac{5}{8}t^4 - \frac{2}{7t^5} + \sqrt{3} \right) dt ∫(85​t4−7t52​+3​)dt

simplifying your answer.

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1.7 Integration Questions

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