matlab中pascal是什么意思？

生成Pascal矩阵

pascal

Pascal matrix
Syntax

A = pascal(n)
A = pascal(n,1)
A = pascal(n,2)
Description

A = pascal(n) returns the Pascal matrix of order n: a symmetric positive definite matrix with integer entries taken from Pascal's triangle. The inverse of A has integer entries.

A = pascal(n,1) returns the lower triangular Cholesky factor (up to the signs of the columns) of the Pascal matrix. It is involutary, that is, it is its own inverse.

A = pascal(n,2) returns a transposed and permuted version of pascal(n,1). A is a cube root of the identity matrix.
Examples

pascal(4) returns

1 1 1 1
1 2 3 4
1 3 6 10
1 4 10 20

A = pascal(3,2) produces

A =
1 1 1
-2 -1 0
1 0 0

See Also

chol
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pascal(n)是矩阵实验室（Matrix Laboratory）MATLAB中的命令，利用pascal（）命令可以在矩阵实验室中方便的得到任意阶帕斯卡矩阵。设A为帕斯卡矩阵，则在MATLAB命令窗口中输入A=pascal(n)，n为正整数，可得到阶数为n的帕斯卡矩阵。
帕斯卡矩阵：由杨辉三角形表组成的矩阵称为帕斯卡(Pascal)矩阵。
杨辉三角形表是二次项 (x+y)^n 展开后的系数随自然数 n 的增大组成的一个三角形表。
　

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