CASTI-89 TITANIUM · CALC89
sum(
Returns the sum of the elements of a list.
Syntax
sum(list[, start[, end]])
- Group
- List
- Arguments
- Takes the list and optional start and end positions to use only part of it.
- Availability
- Included
- Menu path
- MATH ▸ List ▸ sum(
Example
| Input | Result |
|---|---|
| sum({1,2,3,4}) | 10 |
Typing sum({1,2,3,4}) on the home screen and pressing ENTER returns 10.
Keystrokes on the TI-89 Titanium
2NDMATH3▶▶5
The same key sequence inserts sum( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- cumSum(Returns a list of the running totals of a list's elements.
- deltaList(Returns a list of the differences between consecutive elements of a list.
- product(Returns the product of the elements of a list.
- seq(Builds a list by evaluating an expression as a variable runs from a low to a high value.
- SortASorts a list variable in ascending order and stores the result back in the variable.
- SortDSorts a list variable in descending order and stores the result back in the variable.