please write this equation 2.31 in MATLAB code

p= -5 to +5 not from - to +

Kp is a matrix of size (10,10)

Kp= ones(10,10)

By using for loop

-j6..x r(x) -5 M. The structure is periodic in x with lattice constant a, therefore , (r) must satisfy the relation: (2.30) The material expansion is obtained by expressing the inverse of the relative permittivity using the Fourier series of the form ATLAB CDd (2.31) where x are the expansion coefficients and G 2m p/a is the reciprocal lattice. The variable p is an integer identifying a specific cell. -j6..x r(x) -5 M. The structure is periodic in x with lattice constant a, therefore , (r) must satisfy the relation: (2.30) The material expansion is obtained by expressing the inverse of the relative permittivity using the Fourier series of the form ATLAB CDd (2.31) where x are the expansion coefficients and G 2m p/a is the reciprocal lattice. The variable p is an integer identifying a specific cell