Let F(x, Y) = $\frac { x } { y + 1 }$

question 29

Short Answer

Let f(x, y) = $\frac { x } { y + 1 }$ . Find $\frac { \partial ^ { 2 } \mathrm { f } } { \partial \mathrm { x } \partial \mathrm { y } }$ .
Enter just ± $( \mathrm { P } ( \mathrm { y } ) ) ^ { \mathrm { a } }$ where P is a polynomial in standard form (do not label).

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