解不等式:x(x-1)(x-2)2(x2-1)(x3-1)>0
问题描述:
解不等式:x(x-1)(x-2)2(x2-1)(x3-1)>0
答
x(x-2)2(x-1)(x-1)(x2+x+1)(x+1)(x-1)>0
因为x2+x+1恒大于0
所以x(x-2)2(x-1)3(x+1)>0
数轴标根法 解得-1