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Math Help - Expanding formula

  1. #1
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    Expanding formula

    Im trying to understand some notes, can someone please explain if the following is the case?

    d/dr [r * da/dr ]

    does this equal

    da/dr + r * d^2a / dr^2

    Thanks

    Calypso
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  2. #2
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    Quote Originally Posted by calypso View Post
    Im trying to understand some notes, can someone please explain if the following is the case?

    d/dr [r * da/dr ]

    does this equal

    da/dr + r * d^2a / dr^2

    Thanks

    Calypso
    Your calculation is correct.
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  3. #3
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    Has these being done using the product rule?
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  4. #4
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    Quote Originally Posted by calypso View Post
    Has these being done using the product rule?
    Yes.
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