(adsbygoogle = window.adsbygoogle || []).push({}); Integrating dx/dv^2 ??

i'm trying to figure out an example in my physics book but i don't quite understand the maths.

[tex]

\int \frac {dv} {v^2} = - \frac {1} {v}

[\tex]

how does this happen??

looking at the basic antiderivative formulas section in my maths book, it says that:

[tex]

\int \frac {dv} {v} = ln v

[\tex}

but nowwhere do i find info on how to do the problem in my physics book.

would reallly appreciate the help! :)

+edit+

sorry, very new to the forums.. why doesn't the latex work?

just in case others can't view it as well.. what i meant was..

how do you integrate dv/v^2? i know the answer is -1/v but don't know the rules for this. the closest rule i can find is that integrating dv/v is ln v..

incidentally, i don't think i've activated this account properly.. how can i activate my account? (i deleted the activate account e-mail i think)

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# Integrating dx/dv^2 ?

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