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设$z=f(x,y)$满足:$ \dfrac { \partial ^{2}z}{ \partial x \partial y}=2x$,$f{x}'(x,0)=2 \cos x$,$f(0,y)=e^{y}+1$ 则$f(x,y)= \underline { \quad \quad \quad }$.
                        
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