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Math Help - Derivative

  1. #1
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    Derivative

    Is this right for the derivative of arcsin(2x)?

    = 1/√(1 - 4x)
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  2. #2
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    Quote Originally Posted by offahengaway and chips View Post
    Is this right for the derivative of arcsin(2x)?

    = 1/√(1 - 4x)
    missing a "2" in the numerator (derivative of 2x)
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  3. #3
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    thanks
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  4. #4
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    Another differentiation problem

    is the differential of √(1 - 4x)

    =1/2(1 - 4x)^-1/2
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  5. #5
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    Smile

    hello
    you've forgotten the differential of 1-4x^{2}
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  6. #6
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    Which is -8x?
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  7. #7
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    While im here can this be simplified?

    arcsin(2x)1/2(-8x)^-1/2
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  8. #8
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    hello
    you mean this : \frac{asin\left( 2\,x\right) }{4\,\sqrt{2}\,\sqrt{-x}} ?
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  9. #9
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    i mean this

    arcsin(2x)[1/2(-8x)^-1/2]

    can the above be simplified?
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  10. #10
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    Smile

    try to expand what is in [ ],you'll have the same result,and it's already simplified.
    (or probably i went wrong)
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  11. #11
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    thanks
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