F# 将一个浮点数和一个向量相乘？So val比例：浮动->；浮动*浮动->；浮动，浮动？

如何生成一个函数scale（），它将浮点和向量相乘。它必须使用此处显示的库？我想它叫图书馆，如果那是错的，对不起

/// Multiplication of a float and a vector
val scale : float -> float * float -> float * float

花了4个小时想弄明白

我的任务（数据科学第三周）是，我有一个包含2D向量库的签名文件，我需要使用该库从中生成函数

/// A 2D vector library

/// Vectors are represented as pairs of floats module vec2d

/// The length of a vector
val len : float * float -> float
/// The angle of a vector
val ang : float * float -> float
/// Multiplication of a float and a vector
val scale : float -> float * float -> float * float
/// Addition of two vectors
val add : float * float -> float * float -> float * float
/// Dot product of two vectors
val dot : float * float -> float * float -> float

目前我有：

// LENGTH OF A VECTOR
// val len : float * float -> float
let len (x: float, y: float) =
    sqrt(x**2.0 + y**2.0)

// ANGLE OF A VECTOR
// val ang : float * float -> float
let ang (x: float, y: float) =
    Math.Atan2(y, x)

// MULTIPLICATION OF A FLOAT AND A VECTOR
// val scale : float -> float * float -> float * float
let scale () =
    None

/// ADDITION OF TWO VECTORS
// add : float * float -> float * float -> float * float 
let add (xy1: float, xy2: float) =
    None 

/// DOT PRODUCT OF TWO VECTORS
// dot : float * float -> float * float -> float
let dot (xy1: float, xy2: float) =
    None

---

任何形式的帮助/提示都会非常有用！我卡住了

这就是你要找的吗

let scale n (x: float, y: float) =
    n*x, n*y

这将向量元组（x，y）中的每个值与浮点n相乘