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In: Economics

given f(x,y)=4x^2+6xy-5y^2 A)what is df(x,y)/dx B)what is df(x,y)/dy C)what is d^2f(x,y)/dx^2 D)what is d^2f(x,y)/d^2 E)what is...

given f(x,y)=4x^2+6xy-5y^2

A)what is df(x,y)/dx

B)what is df(x,y)/dy

C)what is d^2f(x,y)/dx^2

D)what is d^2f(x,y)/d^2

E)what is d^2f(x,y)/dxdy

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