How do I specify range for my x axis using the plot function

x = linspace(0,2*pi);
 y = cos(x);
 plot( ??? ) if I want to run this code in the range of [−2π , 6π ]

Answer 1

[Chris Burschyk]

x = linspace(0,2*pi);
y = cos(x);
plot(x,y)
xlim([-2*pi, 6*pi])

[Promise Olayemi]

Using the plot function only

Answer 2

[VBBV]

x = linspace(-2*pi,6*pi);  %give those values here 
y = cos(x);
plot(x,y)