SOLUTION: Write the first seven terms of each sequence: a1=1 , a2=-1 , an=an-2-an-1 , n is greater/equal to 3

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Question 127622This question is from textbook college algebra with trigonometry
: Write the first seven terms of each sequence:
a1=1 , a2=-1 , an=an-2-an-1 , n is greater/equal to 3 This question is from textbook college algebra with trigonometry

Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
a1=1
a2=-1
an= an-2 - an-1 n>=3
then a3=a1-a2=2
a4=a2-a3=-3
a5=a3-a4=5
a6=a4-a5=-8
a7=a5-a6=13