(1-2)(2-3)(3-4)(4-5)...(2008-2009)等于多少

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/16 09:03:09
(1-2)(2-3)(3-4)(4-5)...(2008-2009)等于多少(1-2)(2-3)(3-4)(4-5)...(2008-2009)等于多少(1-2)(2-3)(3-4)(4-5)...(

(1-2)(2-3)(3-4)(4-5)...(2008-2009)等于多少
(1-2)(2-3)(3-4)(4-5)...(2008-2009)等于多少

(1-2)(2-3)(3-4)(4-5)...(2008-2009)等于多少
1
因为是偶数个-1相乘