How to change this function fun = @(x)x(1)*exp(-norm(x)^2) to x^2+y^2?

Hi

I dont know how to change fun = @(x)x(1)*exp(-norm(x)^2) to function x^2+y^2??

Thanks for answers

Answer 1

[Alex Mcaulley]

 fun = @(x) (x(1)^2 + x(2)^2) %x(1) is x and x(2) is y
 %or
 fun = @(x,y) (x^2 + y^2)