>
数学
>
化简:1x2分之1+2x3分之1+3x4分之1+……+9x10分之1
人气:200 ℃ 时间:2020-03-25 02:21:11
解答
1/(1×2)+1/(2×3)+1/(3×4)+.+1/(9×10)
=1-1/2+1/2-1/3+1/3-1/4+.1/9-1/10
=1-1/10
=9/10
推荐
1/1x2+1/2x3+1/3x4+1/4x5.1/9x10简算
1X2/1+2X3/1+3X4/1+……+9X10/1=_____
计算:1/1x2+1/2x3+1/3X4+...+1/9x10=?
1/1x2+1/2x3+1/3x4+1/4x5+……1/8x9+1/9x10=?(简便算法)
1/1x2+1/2x3+1/3x4+1/4x5+…+1/99x100.
STRICT的含义,用法
Jim is thirteen years old.Kate is eleven years old.(合并成一个句子)
数以千计的圆形围屋或土楼就是被誉为“世界民居奇葩”的客家民居.缩句……急!
猜你喜欢
Until the person the letters were addressed to happened to stop at the inn
The shop assistant wants the lady to buy another dress.
I think they are in the box box要不要负数形式
《望岳》与《渡荆门送别》所抒发的情感有什么相同和不同之处?
描写朋友间情谊深厚的成语
直为斩楼兰的斩楼兰是什么意思
mary does her homework at home every day.(改为一般一问句)告诉我
水结成冰时,它的体积增加了原来的 1
© 2024 79432.Com All Rights Reserved.
电脑版
|
手机版