I=[sin(u).*sin(N*u*d/a)./u./sin(u.*d./a)]^(2);Inputsmustbeascalarandasquarematrix.TocomputeelementwisePOWER,usePOWER(.^)instead.怎么回事

Question

I=[sin(u).*sin(N*u*d/a)./u./sin(u.*d./a)]^(2);
Inputs must be a scalar and a square matrix.
To compute elementwise POWER,use POWER (.^) instead.
怎么回事

Answer 1

matlab里中括号里包含的是矩阵,这里应该把中括号改为小括号,而且用 .^ 来求平分
I=(sin(u).*sin(N*u*d/a)./u./sin(u.*d./a)).^(2);