已知|ab-2|与|b-1|互为相反数.求1/ab+1/(a+2)*(b+1)+1/(a+2)*(b+2)+...+1/
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/08/08 14:38:31
已知|ab-2|与|b-1|互为相反数.求1/ab+1/(a+2)*(b+1)+1/(a+2)*(b+2)+...+1/(a+2010)*(b+2010)
![已知|ab-2|与|b-1|互为相反数.求1/ab+1/(a+2)*(b+1)+1/(a+2)*(b+2)+...+1/](/uploads/image/z/18326679-15-9.jpg?t=%E5%B7%B2%E7%9F%A5%7Cab-2%7C%E4%B8%8E%7Cb-1%7C%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0.%E6%B1%821%2Fab%2B1%2F%EF%BC%88a%2B2%29%2A%EF%BC%88b%2B1%EF%BC%89%2B1%2F%EF%BC%88a%2B2%29%2A%28b%2B2%29%2B...%2B1%2F)
已知|ab-2|与|b-1|互为相反数.
b-1=0 b=1
ab-2=0 a=2
1/ab+1/(a+2)*(b+1)+1/(a+2)*(b+2)+...+1/(a+2010)*(b+2010)
=1/1x2+1/2x3+1/3x4+……+1/2011x2012
=1-1/2+1/2-1/3+1/3-1/4+……+1/2011-1/2012
=1-1/2012
=2011/2012
b-1=0 b=1
ab-2=0 a=2
1/ab+1/(a+2)*(b+1)+1/(a+2)*(b+2)+...+1/(a+2010)*(b+2010)
=1/1x2+1/2x3+1/3x4+……+1/2011x2012
=1-1/2+1/2-1/3+1/3-1/4+……+1/2011-1/2012
=1-1/2012
=2011/2012
已知(a-3)的2次方与根号b-1互为相反数,求a-b/ab
已知/ab-2/与(b-1)的平方互为相反数,求a,b的值
已知2ab的绝对值与(b-1)是互为相反数,求a+b的值
|a+b+2|与|ab-1|互为相反数,求代数式a+b-ab-1的值.
已知a与b互为相反数,且|a-2b|=3/2,求代数式(2a-ab-b*b)/(a*a+ab+b-1)的值.
已知(a-3)2与(b-1)2互为相反数,求代数式(ab
已知|ab-2|与|b-1|互为相反数,试求
已知|a+b-1|与(a-2b+3)互为相反数,求ab的相反数的平方根
已知|a-b-1|与3(a-2)^2互为相反数,求ab的值.
已知3|A-1|与2(AB-3)^2互为相反数,求a+b的值
(3)已知|ab-2|与|b-1|互为相反数,求代数式 1/(ab)+1/[(a+1)(b+1)]
已知 ab-2 b-1 互为相反数