已知x
2-2=0,求代数式
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164254073392401/SYS201310221642540733924014_ST/0.png)
的值.
考点分析:
相关试题推荐
在数学中,为了简便,记
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164254073392401/SYS201310221642540733924013_ST/0.png)
.1!=1,2!=2×1,3!=3×2×1,…,n!=n×(n-1)×(n-2)×…×3×2×1,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164254073392401/SYS201310221642540733924013_ST/1.png)
=
.
查看答案
如图,菱形ABCD的两条对角线分别长6和8,点P是对角线AC上的一个动点,点M、N分别是边AB、BC的中点,则PM+PN的最小值是
.
查看答案
如图,有三条绳子穿过一片木板,姊妹两人分别站在木板的左、右两边,各选该边的一条绳子.若每边每条绳子被选中的机会相等,则两人选到同一条绳子的机率为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164254073392401/SYS201310221642540733924009_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164254073392401/SYS201310221642540733924009_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164254073392401/SYS201310221642540733924009_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164254073392401/SYS201310221642540733924009_ST/2.png)
D.
查看答案