Once we multiply it by a very large number n, it becomes very much greater than kT.
一旦我用一个很大的n与它相乘,它就会变得比kT大得多。
OK, let's check. If we multiply this with a vector, Well, maybe I should do that. Let me write it on the board.
好,检查一下,如果我们把它和向量相乘,呃,我要不要写一下。我还是写在黑板上吧。
There are two ways that we multiply vectors and one is called the "dot product" often also called the scalar product.
矢量乘法有两种,一种叫做“点积“,通常也被叫作“数量积
And the definition, actually, is we split the region into lots of tiny little pieces, we multiply the value of a function at the point times the area of a little piece and we sum that everywhere.
至于定义嘛,实际上,就是把区域分割成许多小区域,再把一点的函数值乘以那个小区域的面积,然后对乘积求和。
Now we can multiply frequencies by integer values. But how can we multiply our frequency by fractional values or divide it?
现在我们可以倍增整数频率,但是我们如何以分数倍增频率,或者分频呢?
Now we can multiply frequencies by integer values. But how can we multiply our frequency by fractional values or divide it?
现在我们可以倍增整数频率,但是我们如何以分数倍增频率,或者分频呢?
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