High-Order Der.

: math 1500 Calculus 1: High-Order Der.
   By smurf on Friday, March 09, 2007 - 12:12 pm: Edit Post

In my notes I've found a question from the text, 30 in 3.7 that has:

1/2x^-1/2 + 1/2y^-1/2 * y-prime = 0

and in the next step 1/2x^-1/2 becomes x^-1/2 and likewise with y, how is 1/2 canceled out?

   By Sasho on Friday, March 09, 2007 - 01:16 pm: Edit Post

Multiply both sides of the equation by 2. The 1/2 on the left hand side will be cancelled out, and the right hand side will stay the same (since 0 time 1/2 is 0).

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