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20050501
Determining the General Term of a Recursion Expression
The following procedure converts the sequence expressed by a recursion expression to the
general term format an = f (n).
Example: To determine the general term of the recursion expression an+1 = an + 2, a1 = 1
u ClassPad Operation
(1) Start up the Sequence Editor.
• If you have another application running, tap m and then H.
• If you have the Sequence application running, tap O and then [Sequence Editor].
(2) Tap (or press) O, [Sequence RUN], [Calc], [rSolve], [n,an], [an+1], =, [n,an], [an], +,
2, ,, [a0,a1], [a1], =, 1, and then ).
(3) Press E.
6-3-5
Recursive and Explicit Form of a Sequence
Tip
• For information about the syntax of the “rSolve” function, see “2-7 Using the Action Menu”.
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