How to present this equation for plotting

I have this equation:

that I need to input into matlab for plot into a surface. However, I am not sure whether I should use power or ^ for my equation. This is the rest of my code:

star = 2*pi;
x = 0:0.01:star;  % define range and mesh of x and y which will be shown in figure
y = -1:0.01:1;
[X, Y] = meshgrid(x, y);
surf(X, Y, t(X,Y));

Answer 1

[Rik]

You need either power or .^ (otherwise you perform a matrix power). So apart from that correction, either will work.

I would suggest using linspace to generate the base vectors x and y, but this works as well (although it does not guarantee the end-point to be 2*pi).

If you have trouble with implementing the rest of your function, just post a comment with what you have.