jeremiahharrisjr
03.03.2021 •
Mathematics
A pendulum is swinging back and forth. After t seconds, the horizontal distance from the bob to the place where
it was released is given by
(t) = 7 - 7 cos
271 (t - 2)
20
How often does the bob cross its midline? Give an exact answer
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Ответ:
⇒ which equal 1 1/2