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Let f(x,y)=x2f ( x , y ) = x ^ { 2 }

question 8

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Let f(x,y) =x2f ( x , y ) = x ^ { 2 } , and let R={(x,y) 0x1,0y1}R = \{ ( x , y ) \mid 0 \leq x \leq 1,0 \leq y \leq 1 \} . Let R be partitioned into two subrectangles by the line x=12x = \frac { 1 } { 2 } , and let (xi,yj) \left( x _ { i } ^ { * } , y _ { j } ^ { * } \right) be the center of Rij. Calculate the double Riemann sum of f.


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