MATLAB: How to enter a function into matlab

Question

Hello good day,

I am having issues on how to enter this equation into MATLAB.

Also,

thank you in advance !

Answer 1

H/2*sigma.*cosh(k.*(h+z))./sinh(k.*h).*cos(k.*x-sigma.*t)
H/2*sigma.^2.*cosh(k.*(h+z))./sinh(k.*h).*sin(k.*x-sigma.*t)