It's the world portfolio, it's everything and we compute the expected return on that portfolio, rm that's rm.
这就产生了世界投资组合,然后我们在此基础上计算出预期收益,所得值就是。
In order to create any kinds of expressions, we're going to need values. Primitive data elements.
因此下一节课,Python的一些简单介绍,我们需要值或者基础的数据类型l来创建。
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