5-9-2

Graphing a Recursion Formula

Example

Generate a number table from recursion between three terms as

 

expressed by an+2 = an+1 + an, with initial terms of a1 = 1, a2 = 1

 

(Fibonacci sequence), as n changes in value from 1 to 6.

Procedure

1m RECUR

23(TYPE)3(an+2)

34(n. an ··)3(an+1)+2(an)w

45(SET)2(a1)bwgwbwbwJ

56(TABL)

Result Screen

*The first two values correspond to a1 = 1 and a2 = 1.

#Pressing 1(FORM) will return to the screen for storing recursion formulas.

#Specifying On for the Σ Display of the Setup screen causes the sum of each term to be included in the table.

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