TI-BASIC:Prod

From Learn @ Cemetech
Revision as of 14:08, 24 February 2016 by Maintenance script (talk | contribs) (Initial automated import)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigationJump to search

PROD.GIF

Command Summary

Calculates the product of all or part of a list.

Command Syntax

prod(list[,start,[end

Menu Location

{{{location}}}

Calculator Compatibility

{{{compatibility}}}

Token Size

{{{size}}}

)

|location=Press:

  1. 2nd LIST to access the list menu.
  2. LEFT to access the MATH submenu.
  3. 6 to select prod(, or use arrows and ENTER.

|compatibility=TI-83/84/+/SE |size=1 byte ]]

The prod( command calculates the product of all or part of a list.

When you use it with only one argument, the list, it multiplies all the elements of the list. You can also give it a bound of start and end and it will only multiply the elements starting and ending at those indices (inclusive).

prod({1,2,3,4,5})
    120
prod({1,2,3,4,5},2,4)
    24
prod({1,2,3,4,5},3)
    60

Optimization

If the value of end is the last element of the list, it can be omitted:

prod({1,2,3,4,5},3,5)
can be
prod({1,2,3,4,5},3)

Error Conditions

  • ERR:DOMAIN if the starting or ending value aren't positive integers.
  • ERR:INVALID DIM if the starting or ending value exceed the size of the list, or are in the wrong order.

Related Commands