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Whimsical

how do you integrate (sin(x))^2 without using the trigo identity cos(2x)=1-2(sin(x))^2

  • one year ago
  • one year ago

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  1. Aamal
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    can we there use anyother trigo identity

    • one year ago
  2. Whimsical
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    erm... u cant use any trigo identity or integrating it by parts

    • one year ago
  3. Aamal
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    yeah integraion by parts give our result

    • one year ago
  4. brinethery
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    Maybe U-substitution for this one?

    • one year ago
  5. Whimsical
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    is it impossible to integrate this without using trigo identity or intergration by parts? can we use chain rule and integrate it into \[-1/3\cos^3(x)\]

    • one year ago
  6. brinethery
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    http://youtu.be/qclrs-1rpKI?t=3m32s

    • one year ago
  7. Whimsical
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    ok i understand now thankyou

    • one year ago
  8. brinethery
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    You can also use the good ol' table of integrals but I'm sure your teacher doesn't want that. http://integral-table.com/integral-table.html#SECTION00007000000000000000

    • one year ago
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