若不等式组X/2+A大于等于2和2x-b小于3的解集是零小于等于X小于1 则A+b的值是几
人气：332 ℃ 时间：2019-08-30 13:56:35
解答
X/2+A≥2
则X≥4－2A
2x-b＜3则X＜（3＋b)/2
且 0≤x＜1所以4－2A＝0,（3＋b)/2＝1
故A＝2,b=-1
即A+b=1
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