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Math Help - sin^2(x)

  1. #1
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    sin^2(x)

    is sin^2(x) = (sin(x))^2 or sin (x^2) ?
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  2. #2
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    \sin^2(x)=[\sin(x)]^2 and that second way is how many calculators and computer algebra systems require it be done.
    But historically the first way is preferred.
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  3. #3
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    \sin^2(x) = \sin(x) \sin(x) = [\sin(x)]^2

    This holds for any positive integer
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