-1≤y+1/2(y-1)≤1怎么解??？

熱心網(wǎng)友

先解-1≤y+1/2(y-1) y=-1/3再解y+1/2(y-1)≤1 y<=1取公共部分:-1/3≤y≤1

熱心網(wǎng)友

要分情況