|ab-2 |+(b-1)×(b-1)=0,求ab分之一+(a+1)(b+1)分之一+...+(a+2000)(b+2000)的值
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|ab-2|+(b-1)×(b-1)=0,求ab分之一+(a+1)(b+1)分之一+...+(a+2000)(b+2000)的值|ab-2|+(b-1)×(b-1)=0,求ab分之一+(a+1)(b+
|ab-2 |+(b-1)×(b-1)=0,求ab分之一+(a+1)(b+1)分之一+...+(a+2000)(b+2000)的值
|ab-2 |+(b-1)×(b-1)=0,求ab分之一+(a+1)(b+1)分之一+...+(a+2000)(b+2000)的值
|ab-2 |+(b-1)×(b-1)=0,求ab分之一+(a+1)(b+1)分之一+...+(a+2000)(b+2000)的值
|ab-2 |+(b-1)×(b-1)=0,求ab分之一+(a+1)(b+1)分之一+...+(a+2000)(b+2000)的值
|ab-2 |+(b-1)×(b-1)=0,
则b-1=0 b=1
ab-2=0 a=2
ab分之一+(a+1)(b+1)分之一+...+(a+2000)(b+2000)
=1/1x2+1/2x3+……+1/2001x2002
=1-1/2+1/2-1/3+……+1/2001-1/2002
=1-1/2002
=2001/2002
|ab-2 |+(b-1)×(b-1)=0,
b=1,a=2
1/ab+1/ (a+1)(b+1)+1/(a+2)(b+2)+……+1/(a+2000)(b+2000)
=1/1*2+1/2*3+1/3*4+……+1/2001*2002
=(1-1/2)+(1/2-1/3)+(1/3-1/4)+……+(1/2001-1/2002)
=1-1/2002
=2001/2002
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