试证明n维随机变量的共熵,不大于它们各自的熵之和。
参考答案:
Only when he reached the teahouse it was the same place he’d been in last year.
A.he realized
B.realized he
C.had he realized
D.did he realize
以庇古为代表的现金余额数量说认为()。
A.假定其他因素不变,物价水平与货币量成正比,货币价值与货币量成反比
B.人们对货币的需求量取决于他们的流动性偏好
C.恒久性收入越高,所需货币越多
D.货币量是最活跃的因素