50g

Is it possible to define a variable as an integer?

for example if 'n' was defined as an integer, then the calculator would
simplify sin(2*pi*n) -> 0, and not just assume 'n'is a real and leave it
the way it is?

d.

Hello Dusan, you can not declare variables in your hp 50, a variable 
just become an integer if you store an integer in it. The function 
VTYPE let's you know the type of the object stored in a variable.