how to create an anonymous function?

f(x,y)=x exp(-2y^2-x^2)

plot the surface of the function over R=[-2,2] x [-2,2]

[Stephen23]

Why do you need an anonymous function?

This is not required for plotting.

Answer 1

[Guillaume]

Aren't the example in the documentation clear enough?

In this case (assuming the missing operator between x and exp is a multiplication):

f = @(x, y) x.*exp(-2*y.^2-x.^2);

Note: this is an answer to your question title: "How to create an anonymous function".

Answer 2

[Azzi Abdelmalek]

x=[-2,2]
y=[-2,2] 
[X,Y]=meshgrid(x,y)
Z=X.*exp(-2*Y.^2-X.^2)
surf(X,Y,Z)