清空筛选条件
清空筛选条件

norm square

30 次查看（过去 30 天）
Janet
Janet 2012-2-23
评论： Jaromir Kabelac 2020-3-3
How to implement equation:
CRE=||Pu||^2
P is a matrix

请先登录，再回答此问题。

采纳的回答

Wayne King
Wayne King 2012-2-23
Is Pu a vector resulting from multiplying a vector by a matrix
P = randn(2,2);
u = randn(2,1);
norm(P*u,2)
  1 个评论
Jaromir Kabelac
Jaromir Kabelac 2020-3-3
This is not true.
norm(x, 2)
is the same as
norm(x)
and calculates the 2-norm (or Euclidian norm) of x, which could be denoted as , or usually just as .
What you probably want is the square of the norm, hence
norm(x)^2

请先登录，再进行评论。

更多回答（1 个）

Jonathan Sullivan
Jonathan Sullivan 2012-2-23
Have you tried
CRE = norm(P)^2;
help norm
doc norm

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

尚未输入任何标签。

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by