下面看看Option的函数组合(function composition):map2用一个函数f在Option管道内把两个Option合并起来:
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组合函数 combination ; combining function ; Combination Function ; Composed Method
组合函数最小化 combinational function minimization
新组合函数法 New compound function method
贝塞尔函数的线性组合 Linear combination of Bessel functions
轨道波函数的线性组合 linear combination of atomic orbitals
写一系列的合适的函数组合,画出图4.2所示的形状。
Write an appropriately general set of functions that can draw shapes as in Figure 4.2.
写一系列的合适的函数组合,画出图4.1所示的花图案。
Write an appropriately general set of functions that can draw flowers as in Figure 4.1.
还可以通过使用组合运算符将函数组合在一起来定义新函数。
You can also define new functions by combining functions by using the composition operator.
It shows the standard deviation of the return on the portfolio as a function of the expected return on the portfolio.
它是投资组合的收益标准差,关于预期收益率的函数图像。
All right. So, let's look at this in another way, sometimes it's hard to picture these waves combining.
好的,让我们从另外一个方面来看,有时候很难想象这些波函数的组合。
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