已知|x1-1|+|x2-2|+|x3-3|+…+|x2002-2002|+|x2003-2003|=0,求代数式2x1?2x2?…?2x2002+2x2003的值

2024-12-04 20:10:23
推荐回答(1个)
回答1:

∵|x1-1|+|x2-2|+|x3-3|+…+|x2002-2002|+|x2003-2003|=0,
∴x1=1,x2=2,x3=3,…,x2002=2002,x2003=2003,
2x1?2x2?…?2x2002+2x2003
=2-22-…-22002+22003
=22003-22002-…-22+2
=22002-22001…-22+2
=22001-…-22+2

=22+2
=4+2
=6.
故代数式2x1?2x2?…?2x2002+2x2003的值为6.