How to evaluate an expression with a list of numbers:
Base4={x^2 Cos[x], Cos[x] Sin[x]}
(I want to know if the base is equal to 0 at points x=0 and x=Pi. So I do as following)
x=0;
Base4
x=Pi;
Base4
Clear[x]
(is there any way to do this in a single line?)
