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Komok [63]
2 years ago
15

The rate at which an assembly line workers efficiency E (expressed as a percent) changes with respect to time t is given by E'(t

) = 75 - 6t, where t is the number of hours since the workers shift began. Assuming that E(1) = 92, find E(t).
Mathematics
1 answer:
zavuch27 [327]2 years ago
4 0

By the fundamental theorem of calculus,

E(t)=E(1)+\displaystyle\int_1^t E'(u)\,\mathrm du

So we have

E(t)=92+\displaystyle\int_1^t(75-6u)\,\mathrm du

E(t)=92+(75u-3u^2)\bigg|_1^t

E(t)=20 + 75 t - 3 t^2

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