查人人中国名人网电动汽车电源管理系统:一个数学游戏
来源：百度文库 编辑：查人人中国名人网 时间：2024/04/28 23:20:27
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(x-a)(x-b)(x-c).....(x-z)
(x-a)(x-b)(x-c).....(x-z)
等于零!(X-X)=0!0*任何数=0
原式=(x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)(x-k)(x-l)(x-m)(x-n)(x-o)(x-p)(x-q)(x-r)(x-s)(x-t)(x-u)(x-v)(x-w) 重点→(x-x)←重点 (x-y)(x-z)
x-x=0
所以原式=x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)(x-k)(x-l)(x-m)(x-n)(x-o)(x-p)(x-q)(x-r)(x-s)(x-t)(x-u)(x-v)(x-w)*0*(x-y)(x-z)
所以原式=0
youyisi
=0