What is the problem with this code snippet?

function phi1= @(y)  2*(y-0.5)*(y-1)

It says 'Invalid use of operator' on run.

Answer 1

[madhan ravi]

https://in.mathworks.com/help/matlab/matlab_prog/anonymous-functions.html

phi1 = @(y)  2*(y-0.5)*(y-1)