plotting functions over domain

how would i go about doing this im constanly getting erros with my current code

Plot the function f (x, y) = (x^2 + 3y^2)e^1−x^2-y^2

over the domain −1 ≤ x ≤ 1, −1 ≤ y ≤ 1.

Answer 1

[Matt J]

fsurf(@(x,y) (x.^2 + 3*y.^2).*exp(1 - x.^2 - y.^2), [-1,1],ShowContours='on');

Answer 2

[the cyclist]

f = @(x,y) (x.^2 + 3*y.^2).*exp(1 - x.^2 - y.^2); % I'm not certain about your notation here

x = -1 : 0.05 : 1;
y = -1 : 0.05 : 1;

[xx,yy] = meshgrid(x,y);

figure
surf(xx,yy,f(xx,yy))

[lateef]

that code worked thanks if i was to add level curves how would i do that ? would i use the contour command or the meshgrid that used in the example ?

in a single graph, plot some level curves. (A good choice of levels might be c = 0, 0.5, 1, ..., 3.)

[the cyclist]

Just realizing I did your homework for you