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Yahoo!

  • 3 years ago

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

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  1. Ishaan94
    • 3 years ago
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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 \(2\pi\).

  2. Ishaan94
    • 3 years ago
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    equation*

  3. Yahoo!
    • 3 years ago
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    lol....u seems to find the answer easily

  4. Yahoo!
    • 3 years ago
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    any trick behind that

  5. Ishaan94
    • 3 years ago
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    Practice. :-)

  6. Yahoo!
    • 3 years ago
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    in my...book the soln is given half a page

  7. Yahoo!
    • 3 years ago
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    @Ishaan94 hw cos^3 x period is 2 pie

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

  9. Yahoo!
    • 3 years ago
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    Is this +2 's topic

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

  11. Ishaan94
    • 3 years ago
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    you know* ...

  12. Yahoo!
    • 3 years ago
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    lol...not in 10 th....

  13. Ishaan94
    • 3 years ago
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    yes. you can. :-)

  14. Yahoo!
    • 3 years ago
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    thxxxx

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