描述
IMSIN函数以x yi或x yj文本格式返回复数的正弦。复数的正弦为-
$$\sin(x yi) \sin(x)\cosh(y) \cos(x)\sin(y)i $$
语法
IMSIN (inumber)争论
Argument描述Required/OptionalInumberA Complex Number for which you want the sine.Required
Notes Excel中的复数仅…
题目链接:求组合数 I #include <iostream>
#include <algorithm>using namespace std;const int mod 1e9 7;int n;
const int N 2010;
int c[N][N];void init()
{for(int i 0; i < N; i )for(int j 0; j < i; j)if(!j) c[i][j] 1;else c[i]…
Java容器的分类 List
ArrayList
源码
public static vooid main(String[] args){ArrayList<String> list new ArrayList<>();list.add("hello");list.add(1, "hello");list.remove("hello");
}
list.add("hello");
…