Matlab sumsqr函數

功能：求矩陣所有元素的平方和

調用形式： [s,n] = sumsqr(x)

例1

a = [1 2 3;1 2 3];
[s,n] = sumsqr(a)

s =

    28

n =

     6

例2

c = [1 2 3 4;1 2 3 4];
[m,n] = sumsqr(c)
A = sumsqr(c)

m =

    60

n =

     8

A =

    60

可以看出n返回值是矩陣元素個數