求图~(1)x^2-y^2≤0 (2)(x+2y-1)(x-y+3)>0

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求图~(1)x^2-y^2≤0 (2)(x+2y-1)(x-y+3)>0

求图~(1)x^2-y^2≤0 (2)(x+2y-1)(x-y+3)>0
求图~(1)x^2-y^2≤0 (2)(x+2y-1)(x-y+3)>0

求图~(1)x^2-y^2≤0 (2)(x+2y-1)(x-y+3)>0

若干年后我会做这道题的 呵呵慢慢研究吧