计算1/(1+根号2)+1/(根号2+根号3)+……+1/(根号99+根号100)
人气:287 ℃ 时间:2019-09-04 07:40:11
解答
1/(1+根号2)+1/(根号2+根号3)+……+1/(根号99+根号100)
=(√2-1)+(√3-√2)+.+(√100-√99)
=10-1
=9
推荐
猜你喜欢
- 师徒2人合作加工360个零件,9天完工,已知师傅每天加工25个,徒弟每天加工多少个?(列方程解答)
- (-3a^n+2b)³(-4ab^n+3)²= (-2xy²)³*(3x²y²)*18x的四次方y的六次方=
- 英语翻译
- The teacher told him not to be late again,-------,he was still late .1but 2becase 3however 4so
- 二维随机变量XY的联合密度函数为F(x,y)=Ke^-(2x+y) X>0,y>0 O,其他 1、求系数K 2、求概率P(2X+Y
- 求100字左右的说明文{列数字说明.比较说明}
- If it__tomorrow,we__to Beijing.A.doesn't rain;will go B.didn't rain;will go
- 已知代数式ax的5次方+bx的3次方+3x+才,当x=0时,该代数式的值为—1.