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apple_pi

  • 3 years ago

integrate sin^3(x).

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  1. apple_pi
    • 3 years ago
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    How to?

  2. lgbasallote
    • 3 years ago
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    \[\int \sin^3 x dx \implies \int (\sin^2 x)\sin x dx \implies \int (1 - \cos^2 x)\sin x dx\] \[\implies \int (\sin x -\sin x \cos^2 x) dx\] do you see it now?

  3. apple_pi
    • 3 years ago
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    Oh, ok I know where to go from here.

  4. apple_pi
    • 3 years ago
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    Thanks

  5. lgbasallote
    • 3 years ago
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    wonderful ^_^

  6. lgbasallote
    • 3 years ago
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    welcome

  7. sami-21
    • 3 years ago
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    why not try this one !!!!! \[\Large \sin^3(x)=\frac{1}{4}(3\sin(x)-\sin(3x))\] everything is Linear !!!

  8. lgbasallote
    • 3 years ago
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    lol :P

  9. apple_pi
    • 3 years ago
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    How'd you get that?

  10. lgbasallote
    • 3 years ago
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    im thinking that's trig identity

  11. sami-21
    • 3 years ago
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    yes it is trigonometric identity :)

  12. apple_pi
    • 3 years ago
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    Cool

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