MATLAB: How to calculte and plot this equation in matlab ,when T=(0-3000k)

loop equation

when, T=(0-3000),

Plot(x,t)

T = 0:3000;
X = @(T) 6.626e-34./sqrt(2*pi*9.11e-31*1.38e-23*T);
figure,plot(X(T),T)

N = 100 ;
t = linspace(0,1,N) ;
x=2*t+4 ;
y=t-1 ;
plot(x,t)

If you know which columns you want;

desiredColumnIndex = [1 23 35 67 70 83];
plot(x,T(:,desiredColumnIndex))

If you want every 20th column;

plot(x,T(:,1:20:end))