Says "error using plot, vectors must be the same length"

x1=linspace(0,8.*pi,50)

y1=exp(-0.1.*x1).*cos(5.*x1)

xx1=linspace(0,8.*pi,1000)

x2=linspace(-1,1)

yy1=exp(-0.1.*x2).*cos(5.*x2)

x3=linspace(-4,4)

y2=sinh(5.*x3)

y3=0.5+2.*cos(0.5.*pi.*x3)/pi-2.*cos(1.5.*pi.*x3)/(3.*pi)+2.*cos(2.5.*pi.*x3)/(5.*pi)

x4=linspace(-4,4)

y4=y3-2.*cos(3.5.*pi.*x4)/(7.*pi)+2.*cos(4.5.*pi.*x4)/(9.*pi)

plot(x1,y1)

plot(xx1,yy1)

plot(x2,y2)

plot(x3,y3)

plot(x4,y4)

Answer 1

[Scott MacKenzie]

Just a simple mistake. Change the 3rd line to

xx1=linspace(0,8.*pi,100);

Or, for higher resolution, change all the linspace functions to 1000 points:

x1=linspace(0,8.*pi,50);
y1=exp(-0.1.*x1).*cos(5.*x1);
xx1=linspace(0,8.*pi,1000) ;
x2=linspace(-1,1,1000);
yy1=exp(-0.1.*x2).*cos(5.*x2);
x3=linspace(-4,4,1000);
y2=sinh(5.*x3);
y3=0.5+2.*cos(0.5.*pi.*x3)/pi-2.*cos(1.5.*pi.*x3)/(3.*pi)+2.*cos(2.5.*pi.*x3)/(5.*pi);
x4=linspace(-4,4,1000);
y4=y3-2.*cos(3.5.*pi.*x4)/(7.*pi)+2.*cos(4.5.*pi.*x4)/(9.*pi);
plot(x1,y1)

plot(xx1,yy1)

plot(x2,y2)

plot(x3,y3)

plot(x4,y4)