New to the forum.. I recently bought a 50g and have been learning how RPN and HP calculators in general work. I am getting more familiar with things but have a concept that I'm not understanding.

If anyone could point me to a webpage describing how matrices, vectors and arrays differ, and their notation on the calculator, it would be helpful. Or if it's simple enough to explain..

I think I'm getting confused with [brackets], (parenthesis), and also the commands. For example, how does having two numbers on the stack and then using ->V2 differ from having two numbers on the stack, then putting a 2 on the stack, then using ->ARRY ?

How does [2 5] differ from (2 5) ?

How does being in rectangular coordinates change the above in comparison to cylindrical?

That's kind of a lot, but any help is appreciated, Thanks.