
Concept explainers
For the following exercises, follow the steps to work with the arithmetic sequence
an=3n−2 using a graphing calculator:
• Press [MODE]
Select [SEQ] in the fourth line
Select [DOT] in the fifth line
Press [ENTER]
• Press [Y = ]
nMin Is the first counting number for the sequence. Set
nMin=1u(n) is the pattern for the sequence. Set
u(n)=3n−2u(nMin) is the first number in the sequence. Set
u(nMin)=1
• Press [2ND] then [WINDOW] to go to TRLSET
Set
TblStart=1
Set
ΔTbl=l
Set lndpnt: Auto and Depend: Auto
• Press [2ND] then [GRAPH] to go to the [TABLE]
61. What are the first seven terms shown in the column with the heading
u(n)?

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Chapter 13 Solutions
Algebra and Trigonometry
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