x1x2……x2000-x2001x2002……x2011=1=x1x2……x1999-x2000x2001……x2011
x1x2……x2000+x2000x2001……x2011=x1x2……x1999+x2001x2002……x2011
(x1x2……x1999+x2001x2002……x2011)x2000=x1x2……x1999+x2001x2002……x2011
两边等式一化简得x2000=1
题目就是这样么?还有没有条件了
x1x2……x2000-x2001x2002……x2011=1=x1x2……x1999-x2000x2001……x2011
x1x2……x2000+x2000x2001……x2011=x1x2……x1999+x2001x2002……x2011
(x1x2……x1999+x2001x2002……x2011)x2000=x1x2……x1999+x2001x2002……x2011
两边等式一化简得x2000=1
题目就是这样么?还有没有条件了