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Ted Dang (Guest)

guest

Mar-01-01, 00:10 AM (EST)

"Conditions for following equation to be true"

f(x) exists, y(x) also exists

f(x) is written as g(x,y)

My question: Under what conditions does

(df/dx) = (pg/px) + (pg/py) (dy/dx)?
y x

Note that(pg/px) is supposed to be a partial derivative.

Thanks in advance.

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alexb
Charter Member
672 posts

Mar-02-01, 00:13 AM (EST)

1. "RE: Conditions for following equation to be true"
In response to message #0

>f(x) exists, y(x) also exists
>
>f(x) is written as g(x,y)
>
>My question: Under what conditions does
>
>
>(df/dx) = (pg/px) + (pg/py)(dy/dx)?
>

If all three terms on the right exist, the left hand-side also exists and they are equal.

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