求2003²-2002²+2001²-2000²+……+3²-2²+1² 的值
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![求2003²-2002²+2001²-2000²+……+3²-2²+1² 的值](/uploads/image/z/442012-4-2.jpg?t=%E6%B1%822003%26%23178%3B-2002%26%23178%3B%2B2001%26%23178%3B-2000%26%23178%3B%2B%E2%80%A6%E2%80%A6%2B3%26%23178%3B-2%26%23178%3B%2B1%26%23178%3B+%E7%9A%84%E5%80%BC)
求2003²-2002²+2001²-2000²+……+3²-2²+1² 的值
求2003²-2002²+2001²-2000²+……+3²-2²+1² 的值
求2003²-2002²+2001²-2000²+……+3²-2²+1² 的值
(2003+2002)(2003-2002)+(2001+2000)(2001-2000)……+(3+2)(3-2)+1=
4005+4001+3997………+1=(4005+1)乘1002除以2=2007006