Recursive and Explicit Form of a Sequence
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 mand then H.
•If you have the Sequence application running, tap Oand 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.
Tip
• For information about the syntax of the “rSolve” function, see
20050501