Question

我要定义向量using System; class TestClass { static void Main() { Action origin = new Action(() => { Console.WriteLine("1st line"); }); Action copyFromOrigin; copyFromOrigin = origin; origin += new Action(() => { Console.WriteLine("2nd line"); }); copyFromOrigin.Invoke(); //result is "1st line", why the "2nd line" is missing? //shouldn't the copyFromOrigin is referencing the origin? Console.ReadKey(); } }。

但是我不知道该怎么做。我定义了

y=[sin(1),sin(1/2),...,sin(1/1000)]

但这不起作用。

Answer 1

只需将y定义如下（并进行初始化以获得更好的性能）：

y = zeros(1, 1000);
for i = 1:1000
    y(i) = sin(1/i);
end

此外，您也可以不使用for：

y = sin(1./(1:1000));

如何定义指定的向量

1 个答案: