find derivative with respect to y.holding x constant.

Is that right or did i do that wrong?

Or is is suppose to be

???? Suggestions?

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- Sep 16th 2009, 10:42 PMel123With respect to y

find derivative with respect to y.holding x constant.

Is that right or did i do that wrong?

Or is is suppose to be

???? Suggestions? - Sep 16th 2009, 10:45 PMMatt Westwood
The point here is "holding x constant".

So treat it as though it were:

or even:

... which should be an elementary application of chain rule. - Sep 16th 2009, 10:46 PMseld
- Sep 16th 2009, 10:47 PMMatt Westwood
- Sep 16th 2009, 10:48 PMel123
not meant to be equal , meant to be minus lol

- Sep 16th 2009, 10:48 PMseld
- Sep 16th 2009, 10:51 PMel123
so i got it right in the second equation?

- Sep 16th 2009, 10:53 PMMatt Westwood
- Sep 16th 2009, 10:54 PMseld
if:

then:

That solution for the partial y is correct. - Sep 16th 2009, 10:58 PMel123
gracias amigos!