【急】已知函数f(x)=不等式组-x+1,xA.{X|X≥-3} B.{x|x≥1} C.{x|-3≤x≤1} D.{x≥1或x≤-3}
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![【急】已知函数f(x)=不等式组-x+1,xA.{X|X≥-3} B.{x|x≥1} C.{x|-3≤x≤1} D.{x≥1或x≤-3}](/uploads/image/z/3766849-25-9.jpg?t=%E3%80%90%E6%80%A5%E3%80%91%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D%E4%B8%8D%E7%AD%89%E5%BC%8F%E7%BB%84-x%2B1%2CxA.%7BX%7CX%E2%89%A5-3%7D+B.%7Bx%7Cx%E2%89%A51%7D+C.%7Bx%7C-3%E2%89%A4x%E2%89%A41%7D+D.%7Bx%E2%89%A51%E6%88%96x%E2%89%A4-3%7D)
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