1. Sep 13, 2005 #1

   CinderBlockFist

   

   In my differential equations book there is this step, that i dont know how it goes from one side to the next.
   
   
   (t^2)y' + 2ty = ((t^2)y)'
   
   
   cause, on the left side I factor out a t, and i get t(ty'+2y) ...so do i have to learn partial derivatives in order to get from the left side to the right ?

    

   CinderBlockFist, Sep 13, 2005
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3. Sep 13, 2005 #2

   Tom Mattson

   

   Staff Emeritus

   Science Advisor

   Gold Member

   It's neither partial derivatives nor simple algebra. It's the Product Rule from Calculus I.

    

   Tom Mattson, Sep 13, 2005
4. Sep 13, 2005 #3

   CinderBlockFist

   

   Oh wow I feel stupid, I was searching my whole book. Thanks again.

    

   CinderBlockFist, Sep 13, 2005

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