HP 50g List function question

[Andres1]

Hello everyone,

Does anyone know if there's a function that will turn a List into a list of accumulated numbers as in {a, b, c} to {a, a+b, a+b+c}. For example,

{2, 7, 1, 9} to {2, 9, 10, 19}

or

{7, 1, 3, 6, 3} to {7, 8, 11, 17, 20}

If not, is there a function that can eliminate the first or last 'n' terms on a List or separate a list in two (one of size 'n').

Thanks in advance,
Sincerely,

Andres