# Calculus-Antiderivative

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Solve the following initial value problem:

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

r(t)=?

• Calculus-Antiderivative -

dr/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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