""variable name" was previously used as a variable" error message

I keep getting the error message, "Error: "NC" was previously used as a variable,conflicting with its use here as the name of a function or command. regarding the following code I am trying to incorporate within a function:

clear NC;
L1=10; L2=200; u=100; sd=10;
NC=@(x)(1/(sqrt(2*pi)*sd)).*exp((-(x-u).^2)./(2*sd.^2));
P= quadl(@NC,L1,L2);

How do I fix this?

Thanks

Answer 1

[owr]

The problem is in your call to "quadl", you dont need the "@" sign. NC is a function handle, not a function, so you dont need the "@":

clear NC;
L1=10; L2=200; u=100; sd=10;
NC=@(x)(1/(sqrt(2*pi)*sd)).*exp((-(x-u).^2)./(2*sd.^2));
P= quadl(NC,L1,L2);