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  • <cmath>\left\{\begin{array}{l} 2 x^2 + 4xy + 11 y^2 \le 1,\\4x + 7y \ge 3.\end{array}\right.</cmath> <cmath>\left\{\begin{array}{l} 2 (x + y)^2 + 9 y^2 \le 1,\\4(x + y) +3y \ge 3.\end{array}\right.</cmath>
    48 KB (8,214 words) - 07:59, 30 July 2024