满分5 >
高中数学试题 >
已知实数x,y满足,如果目标函数z=x-y的最小值为-1,则实数m等于( ) A...
已知实数x,y满足
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117006_ST/0.png)
,如果目标函数z=x-y的最小值为-1,则实数m等于( )
A.7
B.5
C.4
D.3
考点分析:
相关试题推荐
阅读右边的程序框图,运行相应的程序,输出的结果为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117005_ST/images0.png)
A.12
B.22
C.30
D.32
查看答案
在△ABC中,A,B,C三内角所对的边分别为a,b,c,若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117004_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117004_ST/1.png)
,则角A的大小为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117004_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117004_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117004_ST/4.png)
D.
查看答案
已知抛物线y
2=2px(p>0)的准线与圆x
2+y
2-6x-7=0相切,则p的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117003_ST/0.png)
B.1
C.2
D.4
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117002_ST/images0.png)
设如图是某几何体的三视图,则该几何体的体积为( )
A.9π+42
B.36π+18
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117002_ST/0.png)
D.
查看答案
已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231737204811784/SYS201311012317372048117001_ST/0.png)
,其中i为虚数单位,则a+b=( )
A.-1
B.1
C.2
D.3
查看答案