已知|xy-2|与丨y-1丨互为相反数,试求代数式 1 /xy+1/(x+1)(y+1)+已知|xy-2|与丨y-1丨互为相反数,试求代数式1 /xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2011)(y+2011)的值
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![已知|xy-2|与丨y-1丨互为相反数,试求代数式 1 /xy+1/(x+1)(y+1)+已知|xy-2|与丨y-1丨互为相反数,试求代数式1 /xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2011)(y+2011)的值](/uploads/image/z/2397373-61-3.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BD%9Cxy-2%EF%BD%9C%E4%B8%8E%E4%B8%A8y-1%E4%B8%A8%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E8%AF%95%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F+1+%2Fxy%2B1%2F%EF%BC%88x%2B1%EF%BC%89%EF%BC%88y%2B1%EF%BC%89%2B%E5%B7%B2%E7%9F%A5%EF%BD%9Cxy-2%EF%BD%9C%E4%B8%8E%E4%B8%A8y-1%E4%B8%A8%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E8%AF%95%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F1+%2Fxy%2B1%2F%EF%BC%88x%2B1%EF%BC%89%EF%BC%88y%2B1%EF%BC%89%2B1%2F%EF%BC%88x%2B2%EF%BC%89%EF%BC%88y%2B2%EF%BC%89%2B%E2%80%A6%E2%80%A6%2B1%2F%EF%BC%88x%2B2011%EF%BC%89%EF%BC%88y%2B2011%EF%BC%89%E7%9A%84%E5%80%BC)
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已知|xy-2|与丨y-1丨互为相反数,试求代数式 1 /xy+1/(x+1)(y+1)+已知|xy-2|与丨y-1丨互为相反数,试求代数式1 /xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2011)(y+2011)的值
已知|xy-2|与丨y-1丨互为相反数,试求代数式 1 /xy+1/(x+1)(y+1)+
已知|xy-2|与丨y-1丨互为相反数,试求代数式
1 /xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2011)(y+2011)的值
已知|xy-2|与丨y-1丨互为相反数,试求代数式 1 /xy+1/(x+1)(y+1)+已知|xy-2|与丨y-1丨互为相反数,试求代数式1 /xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2011)(y+2011)的值
|xy-2|=0 x=2
丨y-1丨=0 y=1
1 /xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2011)(y+2011)
=1/2+1/(3*2)+.1(2013*2012)
=2011/4026
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