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OpenStudy (anonymous):
A particle moves along a line so that at time t, its position is s=4sin4t when does the particle change direction? Answer given is pi/8 + pi k and 3pi/8 + pi k I know how to get pi/8 and 3pi/8 , but i dont know the pi k part
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OpenStudy (anonymous):
i know is because there is no domain, but then..how u get pi k
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