I want to plot a function on z axis x and y can vary from 0 to 1 .
Two constants c_one and c_two are fed by user.
f(z)=(c_one*x + c_two *y)/(x+y)
So I tried
[X,Y] = meshgrid(0.1:0.1:1,0.1:0.1:1);
Z = ((0.9*X) + (0.1*Y))/(X+Y);
Here i took c_one=0.9 , c_two=0.1
It should simply evaluate z for 100 pairs of (x,y).
I get the message
Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 5.473412e-19.
Why does that happen ?
Also , can you suggest a better way to graphically show 100 values (I did surf(X,Y,Z)) ?