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anonymous
 5 years ago
I have a general notation question about a partial derivative.. Find the second order derivative r subscript xy for r(x,y)=xy/(5x+7y)
anonymous
 5 years ago
I have a general notation question about a partial derivative.. Find the second order derivative r subscript xy for r(x,y)=xy/(5x+7y)

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0[70*x*y]/{[5*x]+[7*y]}^3

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I know thats the answer, my question is Does r(x,y) mean to multiply the x and y term?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0first u have to differentiate r with respect to y by keeping x as const and then the result u have to differentiate with x in which y will be constant.
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