x0=0
y=cos(x0)
plot(x0,y)
hold on
x=linspace(-2*pi,2*pi,100)
y=cos(x)
plot(x,y)
hold on
y=cos(2*x)
plot(x,y)
hold on
y=cos(3*x)
plot(x,y)
hold on
y=cos(4*x)
plot(x,y)
hold on
y=cos(5*x)
plot(x,y)
hold on
y=cos(6*x)
plot(x,y)
hold on
y=cos(7*x)
plot(x,y)
hold on
y=cos(8*x)
plot(x,y)
hold on
y=cos(9*x)
plot(x,y)
hold on
y=cos(10*x)
plot(x,y)
hold off