y(t)=A1cos(200pit)+A2sin(200pit)

Question

0 个投票

How can i type this equation into matlab using funtion?

How can i plot the output of vector y?

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Walter Roberson 2012-10-26

Answer 1

Wayne King 2012-10-26

编辑：Wayne King 2012-10-26

0 个投票

Hi, Welcome to MATLAB! May I suggest you spend some time reading the Getting Started Guide or some of the excellent online tutorials for MATLAB.

   t = 0:0.001:1;
   A1 = 1;
   A2 = 1;
   y = A1*cos(2*pi*100*t)+A2*sin(2*pi*100*t);
   plot(t,y)

Answer 2

Matt Fig 2012-10-26

编辑：Matt Fig 2012-10-26

0 个投票

A1 = 3;
A2 = 5;
t = 0:1/(2*200*pi):pi/8;
y = A1*cos(200*pi*t)+A2*sin(200*pi*t);
plot(t,y)

If you want to use an M-File function, define it like this:

function y = myfunc(t,A1,A2)
y = A1*cos(200*pi*t)+A2*sin(200*pi*t);

Then from the command line, call it like this:

A1 = 3;
A2 = 5;
t = 0:1/(2*200*pi):pi/8;
y = myfunc(t,A1,A2);
plot(t,y)