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Math Help - integration

  1. #1
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    integration

    how would I integrate this???

    1/sqrt(t + 4)

    can I use u substitution
    When i tried this I got the answer of
    -2/3(t + 4)^(-3/2) + C
    Is this right, or do I need to use a different method???
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  2. #2
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    Quote Originally Posted by mandy123 View Post
    how would I integrate this???

    1/sqrt(t + 4)

    can I use u substitution
    When i tried this I got the answer of
    -2/3(t + 4)^(-3/2) + C
    Is this right, or do I need to use a different method???
    The substitution is right! You need to add to the power, not substract.
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  3. #3
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    ok, so would the answer would be
    2(t + 4)^1/2 + C
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  4. #4
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    Quote Originally Posted by mandy123 View Post
    ok, so would the answer would be
    2(t + 4)^1/2 + C
    Looks good to me! You can differentiate and see if you get the integrand back.
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