Question: I need help finding these 4 questions please and thank you! Find f (x,y) and f(x,y). Then find f (2, - 1) and f (

I need help finding these 4 questions please and thank you!

I need help finding these 4 questions please and thank you! Find

Find f (x,y) and f(x,y). Then find f (2, - 1) and f ( - 3, - 5). f(x,y) = - 5e 9x - 5y

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