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普通高中数学课程标准对|x-c|+ |x-b|≤a、|x-c|+|x-b|≥a型不等式的要求是:会利用绝对值的几何意义求解|x-c|+ |x-b|≤a、|x-c|+|x-b|≥a型的不等式.这是新课程第一次对该类型不等式提出了具
The requirements of the general high school mathematics curriculum standard for |xc|+ |xb| ≤a,|xc|+|xb|≥ a type inequality are: Solve the use of the geometric meaning of absolute values |xc|+ |xb|≤a,| Xc|+|xb| ≥a type inequality. This is the first time the new course has been proposed for this type of inequality.