MATLAB: How to plot “f(x,y) = e^-(x^2+y^2)” function in matlab

MATLABmatlab function

Undefined function or variable 'y'.

Error in Untitled (line 5)

y = exp(x.^2+y.^2);

my computer gives these errors and I do not know how to fix them.

Best Answer

Try this:

figure
fsurf(@(x,y)exp(-(x.^2+y.^2)), [-2 2  -2 2])

Related Solutions

MATLAB: How to plot “f(x,y) = x^2 * y” function in matlab

Try this:

x = linspace(-2.0, 2.0, 50);
y = linspace(-2.0, 2.0, 50);
[xm, ym] = meshgrid(x, y);
fxy = xm.^2 .* ym;
surf(fxy);
% Enlarge figure to full screen.
set(gcf, 'units','normalized','outerposition',[0 0 1 1]);

It gives you almost exactly what you want. You just have to rotate the viewpoint of the axis. I trust you can do this.

MATLAB: Different result by hand-differentiaion vs MATLAB diff() function.

Your "hand-differentiation" is not correct! The 'diff' answer is correct but can be simplified to an equivalent -2/(y+1)^3. (Perhaps the latter is what you meant to write?)

Best Answer

Related Solutions

MATLAB: How to plot “f(x,y) = x^2 * y” function in matlab

MATLAB: Different result by hand-differentiaion vs MATLAB diff() function.

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