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Find the First Six Terms of the Sequence a1=1a _ { 1 } = 1

Question 321

Multiple Choice

Find the first six terms of the sequence.
- a1=1a _ { 1 } = 1 , a2=−1;a _ { 2 } = - 1 ; for n≥3,an=an−1−an−2n \geq 3 , a _ { n } = a _ { n - 1 } - a _ { n - 2 }


A) 1,−1,−2,−1,1,21 , - 1 , - 2 , - 1,1,2
B) 1,−1,0,−1,−4,−51 , - 1,0 , - 1 , - 4 , - 5
C) 1,−1,2,1,5,−81 , - 1,2,1,5 , - 8
D) 1,−1,−3,−5,−7,−91 , - 1 , - 3 , - 5 , - 7 , - 9

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