已知x=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858019_ST/0.png)
-1,求
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858019_ST/1.png)
的值.
考点分析:
相关试题推荐
一根绳子弯曲成如图①所示的形状.当用剪刀像图②那样沿虚线a把绳子剪断时,绳子被剪为5段;当用剪刀像图③那样沿虚线b(b∥a)把绳子再剪一次时,绳子就被剪为9段.若用剪刀在虚线a、b之间把绳子再剪(n-2)次(剪刀的方向与a平行),这样一共剪n次时绳子的段数是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858017_ST/images0.png)
A.4n+1
B.4n+2
C.4n+3
D.4n+5
查看答案
某闭合电路中,电源的电压为定值,电流I(A)与电阻R(Ω)成反比例.图表示的是该电路中电流I与电阻R之间函数关系的图象,则用电阻R表示电流I的函数解析式为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858016_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858016_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858016_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858016_ST/2.png)
D.
查看答案
如图是测量一颗玻璃球体积的过程:
(1)将300ml的水倒进一个容量为500ml的杯子中;
(2)将四颗相同的玻璃球放入水中,结果水没有满;
(3)再加一颗同样的玻璃球放入水中,结果水满溢出.
根据以上过程,推测这样一颗玻璃球的体积在( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858015_ST/images0.png)
A.20cm
3以上,30cm
3以下
B.30cm
3以上,40cm
3以下
C.40cm
3以上,50cm
3以下
D.50cm
3以上,60cm
3以下
查看答案
如图几何体的正视图是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858014_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858014_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858014_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160743387985863/SYS201310221607433879858014_ST/images3.png)
D.
查看答案