│X-1│+│X+2│最小值為3
只需保證3>M即可,所以M
若不等式│X-1│+│X+2│>M的解集為R,則實(shí)數(shù)M的取值范圍是?
若不等式│X-1│+│X+2│>M的解集為R,則實(shí)數(shù)M的取值范圍是?
數(shù)學(xué)人氣:877 ℃時(shí)間:2020-08-28 02:57:40
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