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apple_pi Group Title

integrate sin^3(x).

  • 2 years ago
  • 2 years ago

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  1. apple_pi Group Title
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    How to?

    • 2 years ago
  2. lgbasallote Group Title
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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?

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

    • 2 years ago
  4. apple_pi Group Title
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    Thanks

    • 2 years ago
  5. lgbasallote Group Title
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    wonderful ^_^

    • 2 years ago
  6. lgbasallote Group Title
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    welcome

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

    • 2 years ago
  8. lgbasallote Group Title
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    lol :P

    • 2 years ago
  9. apple_pi Group Title
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    How'd you get that?

    • 2 years ago
  10. lgbasallote Group Title
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    im thinking that's trig identity

    • 2 years ago
  11. sami-21 Group Title
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    yes it is trigonometric identity :)

    • 2 years ago
  12. apple_pi Group Title
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    Cool

    • 2 years ago
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