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দৃশ্যকল্প-১: ( P= left[ begin array ccc 1+x^ 2 -y^ 2 & 2 x y & 2 y 2 x y & 1-x^ 2 +y^ 2 & -2 x -2 y & 2 x & 1-x^ 2 -y^ 2 end array right] ) দৃশ্যকল্প-২: ( R= left[r_ i j right]_ 3 | Suva Ai