seems pretty simple but the on the left side threw me off

; find

Answer key states in the first step that:

not sure how they got

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- April 25th 2010, 10:16 PMdbenpartial derivative question
seems pretty simple but the on the left side threw me off

; find

Answer key states in the first step that:

not sure how they got - April 25th 2010, 10:26 PMRandom Variable
EDIT:

but

so - April 25th 2010, 10:58 PMdben
edit: when you substitute for the whole fraction becomes squared, however, in the answer just the in the denominator is squared, not the

- April 26th 2010, 10:58 PMRandom Variable
- April 26th 2010, 11:37 PMdben
yea, i put it down for the day and looked at it again tonight and realized it is a misprint. The final answer that is printed only works if the whole fraction is squared...Thanks!

dave