http://learn.cemetech.net/index.php?action=history&feed=atom&title=TI-BASIC%3AProdTI-BASIC:Prod - Revision history2026-06-08T11:55:47ZRevision history for this page on the wikiMediaWiki 1.43.3http://learn.cemetech.net/index.php?title=TI-BASIC:Prod&diff=582&oldid=prevMaintenance script: Initial automated import2016-02-24T18:08:27Z<p>Initial automated import</p>
<p><b>New page</b></p><div>{{Template:TI-BASIC:Command<br />
|picture=PROD.GIF<br />
|summary=Calculates the product of all or part of a list.<br />
|syntax=prod(''list''[,''start'',[''end''}})<br />
|location=Press:<br />
# 2nd LIST to access the list menu.<br />
# LEFT to access the MATH submenu.<br />
# 6 to select prod(, or use arrows and ENTER.<br />
|compatibility=TI-83/84/+/SE<br />
|size=1 byte<br />
]]<br />
<br />
The prod( command calculates the product of all or part of a list. <br />
<br />
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).<br />
<br />
prod({1,2,3,4,5})<br />
120<br />
prod({1,2,3,4,5},2,4)<br />
24<br />
prod({1,2,3,4,5},3)<br />
60<br />
<br />
= Optimization =<br />
<br />
If the value of ''end'' is the last element of the list, it can be omitted: <br />
<br />
prod({1,2,3,4,5},3,5)<br />
can be<br />
prod({1,2,3,4,5},3)<br />
<br />
= Error Conditions =<br />
<br />
* '''[[TI-BASIC:Errors#domain|ERR:DOMAIN]]''' if the starting or ending value aren't positive integers.<br />
* '''[[TI-BASIC:Errors#invaliddim|ERR:INVALID DIM]]''' if the starting or ending value exceed the size of the list, or are in the wrong order.<br />
<br />
= Related Commands =<br />
<br />
* [[TI-BASIC:Sum|Sum(]]<br />
* [[TI-BASIC:Dim|Dim(]]<br />
* [[TI-BASIC:Seq_List|seq(]][[Category:TI-BASIC]]<br />
[[Category:TIBD]]</div>Maintenance script