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



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Ishaan94
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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 \(2\pi\).

Ishaan94
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equation*

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lol....u seems to find the answer easily

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any trick behind that

Ishaan94
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Practice. :)

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in my...book the soln is given half a page

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@Ishaan94 hw cos^3 x period is 2 pie

Ishaan94
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Try plotting \(\cos^3x\). You will see it yourself or you can prove it as well.

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Is this +2 's topic

Ishaan94
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idk. but you it's pretty basic you can learn it even class 10th.

Ishaan94
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you know* ...

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lol...not in 10 th....

Ishaan94
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yes. you can. :)

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thxxxx