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September 22, 2014

September 22, 2014

Posted by **Max** on Friday, November 8, 2013 at 7:36pm.

dr/dt=7cos(pi(t)), r(1/4)=14

r(t)=?

- Calculus-Antiderivative -
**Steve**, Saturday, November 9, 2013 at 12:23amdr/dt = 7cos πt

r = 7/π sin πt + c

14 = 7/π sin π/4 + c

14 = 7/(π√2) + c

c = 14 - 7/(π√2)

r = 7/π sin πt + 14 - 7/(π√2)

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