当 x=9 ,解得 x=9 ,解得 x>=4 ,
所以原不等式的解集是 {x | x=4}.
解不等式:X-3的绝对值+ X+4的绝对值大于等于9 使用“零点分类法”
解不等式:X-3的绝对值+ X+4的绝对值大于等于9 使用“零点分类法”
数学人气:854 ℃时间:2019-08-22 17:53:09
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