![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
设集合A={xx∈Z,且-10≤x≤-1},B={xx∈Z,且x≤5},则A∪B中的元素个数是()
A.15
B.10
C.11
D.16
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
D、16
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.15
B.10
C.11
D.16
D、16
设集合M={X∈R|X≤-1},集合N={∈R|Z≥-3},则集合MnN=()
A.{X∈R
B.一3≤X≤-1}
C.{Z∈R
D.Z≤-1}
E.{X∈R
F.X≥一3}
G.φ
(1)证明当x在[0,2π]均匀分布时,信道达到容量。
(2)对下列两种情况求信道容量C;
1,其他
2
设z=f(u),方程确定u是x,y的函数,其中.f(u),φ(u)可微,P(t),φ'(u)连续,且φ'(u)=1,求