比较大小：2/(√6+4)和2√2-√6
人气：409 ℃ 时间：2020-05-20 22:29:19
解答
2/（√6＋4）＜2√2－√6. 证明如下：利用反证法,设2/（√6＋4）≧2√2－√6,则：2（4－√6）/（16－6）≧2√2－√6,∴（4－√6）/5≧2√2－√6,∴4－√6≧10√2－5√6,∴4＋4√6≧10√2,∴2＋2√6≧5√2,∴√2＋...
推荐
猜你喜欢
- Why don`t you talk to her about it 同义句__ __ talking to him about it?
- 坚持做一件事情就会成功,这句用一个四字成语概括
- 两捆电话线的长度相等,如果第一捆剪去20米,第二捆剪去4米,那么第二捆剩下的长度正好是第一捆余下长度的3
- You're shorter than me的问句 My legs are longer than yours的问句 She is 2years younger than you
- 已知三角形ABC中,A(2,-1),B(3,2),C(-3,-1),BC边上高为AD,求向量AD及D点坐标
- My father will come back in a week .同义句转换（ )( )a week ()my father comes back.
- I don't regret the things I've done,I regret the things I didn't do when I had the chance.不为做过
- 例句：书似阶梯,开启心灵之门；书似灯塔,照亮前行之路.仿句：(>_
