MATLAB: How to plot sine and cosine waves in one graph

used for academic use

Best Answer

It sounds like the OP wants this in one graph (not subplotted)

     t = 0:0.01:(2*pi);
     x = cos(t);
     y = sin(t);
     plot(t,x,'k'); hold on;
     plot(t,y,'r-.'); 
     axis([0 2*pi -1.5 1.5])
     legend('cos(t)','sin(t)','Location','NorthEast')

Related Solutions

MATLAB: Plot 2D graph

Put all the graphs on a single figure:

x=-2*pi:0.04:2*pi;
figure;
plot(x,sin(x),'r');
hold on;
plot(x,2*sin(x),'b');
plot(x,3*sin(x),'g');
plot(x,5*sin(x),'c');
plot(x,sin(2*x),'y');
plot(x,sin(3*x),'m');
plot(x,sin(5*x),'k');
grid on;
title('Figure title');

To make individual graphs:

figure:
plot(x,sin(x),'r');
grid on;
title('Sin(x)');

Next figure:

figure;
plot(x,2*sin(x),'b')
grid on;
title('2*Sin(x)');

etc.

MATLAB: What is problem to make space curve [2cos(t),2sin(t),5]

You want to draw this curve in the section of 3-d space in the plane z = 5? You need to specify one z coordinate for each coordinate in x and y. plot3 doesn't do scalar expansion like many other functions do.

>> t = 0:pi/10:pi;
>> plot3(2*cos(t),2*sin(t),repmat(5, size(t)))

Best Answer

Related Solutions

MATLAB: Plot 2D graph

MATLAB: What is problem to make space curve [2*cos(t),2*sin(t),5]

Related Question

MATLAB: What is problem to make space curve [2cos(t),2sin(t),5]