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Find the Period of \[2 cos^3 x + 5cos4x\]

Mathematics
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\(\cos^3x\)'s period is \(2\pi\) and \(\cos 4x\)'s period is \(\pi/2\). The period for the given equations should be \(2\pi\).
equation*
lol....u seems to find the answer easily

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Other answers:

any trick behind that
Practice. :-)
in my...book the soln is given half a page
@Ishaan94 hw cos^3 x period is 2 pie
Try plotting \(\cos^3x\). You will see it yourself or you can prove it as well.
Is this +2 's topic
idk. but you it's pretty basic you can learn it even class 10th.
you know* ...
lol...not in 10 th....
yes. you can. :-)
thxxxx

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