pointed bracket or singular function

[resolved]

in creating a function for that deflection of a beam requires, I am told, the use of pointed brackets or a singular function. If the term within the brackets < > evaluates less than zero, the term becomes zero, something like this

y = -5*x^3 + 180*<x-1>^2 - 10/12 * <x-2>^4 + 10/12*<x-4>^4 - 10*<x-5>^3 - 535*x

is there anyway to input this formula into the HP Prime where the terms in < > will drop out if they evaluation less than zero????