2D plot of a function WITH MATLAB

aredy29

My function is;

y(x,s)= 1-(cos[(s-1)arctan(x)]*gamma(s-1))/(1+x^2)^(s-1)/2

varible x will have range from 0 to 10. At one time the s value will be constant e.g. s = 3 but I want to change s for different values( is there any commands in matlab that will allow me to do this ?). I tried many time but can't get it.