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Conferences The CTK Exchange College math Topic #67
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Ted Dang (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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Charter Member
672 posts
Mar-02-01, 00:13 AM (EST)
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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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