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Math Help - Integration question ( really quick)

  1. #1
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    Integration question ( really quick)

    Is the integral of sin(x/2) = -cos(x/2)
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  2. #2
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    \displaystyle\int \sin\frac{x}{2}~dx = -2\cos\frac{x}{2}+C

    But why?
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  3. #3
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    Haha I need it for another problem, But thank you very much.
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  4. #4
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    That was not what pickslides meant. Do you understand why the integral is -2 cos\frac{x}{2}+ C rather than cos \frac{x}{2}?
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