How to plot a function of two variables against one variable

I have a function z(x,y). I have set up an array for x and I need y=x^2. I've done that and set up the function but I cannot figure out how I am supposed to plot z against x. fplot doesn't work because I have more than one variable. What command should I use?

Answer 1

[Star Strider]

I am not certain what you want.

The documentation on the plot (link) function is an appropriate place to start. That page, and the links in it and at the end of it will eventually lead you to the correct approach. Then, when in doubt, experiment.

Explore these:

x = 1:10;                                                   % Create Data
y = x.^2;                                                   % Create Data
[X,Y] = meshgrid(x,y);
z = @(x,y) sin(x*2*pi/max(x(:))) .* cos(y*2*pi/max(y(:)));  % Create Function

figure
surf(x, y, z(X,Y))
grid on

figure
plot(x, z(X,Y))
grid