Trying to produce a meshgrid 3D plot using surf graphs, error using *

I am trying to make a surf graph for the equation:

Z=[ x(1-y)] / [(1+x)(x+y) ]

Here is what I have so far:

x = 0:1:100;
y = 0:10:1000;
[X,Y]=meshgrid(x,y);
Z=(x-x*y)/(x+x^2+y+x*y)
surf(X,Y,Z')

The error code is:

Incorrect dimensions for matrix multiplication. Check that the

number of columns in the first matrix matches the number of rows in

the second matrix. To perform elementwise multiplication, use '.*'.

Can someone please help me with this? I believe I am using multiplication correctly but I could very likely be wrong.

Answer 1

[KSSV]

Read about element by element operations.

x = 0:1:100;
y = 0:10:1000;
[X,Y]=meshgrid(x,y);
Z=(X-X.*Y)./(X+X.^2+Y+X.*Y) ; 
surf(X,Y,Z)

[Yi Li]

Thank you so much!

[KSSV]

Thanks is accepting/ voting the answer.