HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Strona 560

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ΔLIST
Creates a new list composed of the rst dierences of a list; that is, the dierences between consecutive
elements in the list. The new list has one less element than the original list. The dierences for {x
1
, x
2
, x
3
,...
x
n-1
, x
n
} are {x
2
–x
1
, x
3
–x
2
,... x
n
–x
n–1
}.
ΔLIST(list1)
Example:
In Home view, store {3,5,8,12,17,23} in L5 and nd the rst dierences for the list.
3,5,8,12,17,23 5 . Select List.
Select Δ
ListA. 5
ΣLIST
Calculates the sum of all elements in a list.
ΣLIST(list)
Example:
ΣLIST({2,3,4}) returns 9.
πLIST
Calculates the product of all elements in list.
πLIST(list)
Example:
πLIST({2,3,4}) returns 24.
Finding statistical values for lists
To nd statistical values—such as the mean, median, maximum, and minimum of a list—you create a list,
store it in a data set and then use the Statistics 1Var app.
512 Chapter 25 Lists
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