how to define a function in the command window using "@"

I have seen this before but I can't remember. Can someone give an example? Thanks.

Answer 1

[Andrei Bobrov]

please read here

eg

>> f = @(x)x.^2-3
f(54)
f = 
    @(x)x.^2-3
ans =
        2913

[Amjith Shaheer]

Can this be done (@x) sin(x)-exp(-x)

[Steven Lord]

Moving the first left parenthesis to its proper place, sure.

f = @(x) sin(x)-exp(-x);
f(-1:0.25:1)