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চিত্রে OA = 4 একক এবং BC = 6 একক। ( begin array l দৃশ্যকল্প-২: f(x, y) equiv x^ 2 +y^ 2 -4 x+3 y g(x, y) equiv x^ 2 +y^ 2 +2 x+6 y-15 end array ) | Suva Ai