how to properly write this equation exp(x)cos(y)

I wrote it like exp(x).*cos(y) but I kept getting "Matrix dimensions must agree" as output

[Walter Roberson]

What are size(x) and size(y) and what size of output are you expecting?

[Chrystian McCollum]

[y]=meshgrid(-1:0.5:1); [x]=meshgrid(-2*pi:0.5:2*pi);

[Walter Roberson]

Your y is 5 x 5. Your x is 26 x 26. What size of output are you looking for?

Answer 1

[Matt J]

This might be what you want,

[y,x]=meshgrid(-1:0.5:1,-2*pi:0.5:2*pi);

   exp(x).*cos(y)

Answer 2

[John D'Errico]

An interesting, creative, yet terrible use of meshgrid. Instead, do this:

[x,y] = meshgrid(-2*pi:0.5:2*pi,-1:0.5:1);

Read the help when you will use a function you don't understand. Try some simple examples. Think about what you see in those examples.

By the way, This is usually a bad idea:

-2*pi:0.5:2*pi
ans =
Columns 1 through 13
    -6.2832      -5.7832      -5.2832      -4.7832      -4.2832      -3.7832      -3.2832      -2.7832      -2.2832      -1.7832      -1.2832     -0.78319     -0.28319
Columns 14 through 26
    0.21681      0.71681       1.2168       1.7168       2.2168       2.7168       3.2168       3.7168       4.2168       4.7168       5.2168       5.7168       6.2168

Because the final point will not be 2*pi. So expect to see some artifacts of that at some point in time if you do this sort of thing often. Instead, learn to use linspace.