a.b满足lab-2l+l1-bl=0,求1/ab+1/(a+1)(b+2)++2)+.+1/(a+2008)(b+20
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a.b满足lab-2l+l1-bl=0,求1/ab+1/(a+1)(b+2)++2)+.+1/(a+2008)(b+2008)的值如题
![a.b满足lab-2l+l1-bl=0,求1/ab+1/(a+1)(b+2)++2)+.+1/(a+2008)(b+20](/uploads/image/z/4666290-42-0.jpg?t=a.b%E6%BB%A1%E8%B6%B3lab-2l%2Bl1-bl%3D0%2C%E6%B1%821%2Fab%2B1%2F%28a%2B1%29%28b%2B2%29%2B%2B2%29%2B.%2B1%2F%28a%2B2008%29%28b%2B20)
a.b满足lab-2l+l1-bl=0 ab-2=0,1-b=0 b=1,a=2 1/ab+1/(a+1)(b+2)++2)+.+1/(a+2008)(b+2008) =1/1*2+1/2*3+1/3*4+...+1/2010*2009 =1-1/2+1/2-1/3+1/3-1/4+...+1/2009-1/2010 =1-1/2010 =2009/2010
a.b满足lab-2l+l1-bl=0,求1/ab+1/(a+1)(b+2)++2)+.+1/(a+2008)(b+20
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