Write the first four terms of the sequence.an = 

A. a1 = -1, a2 = a3 = - a4 = 
B. a1 = 1, a2 = - a3 = a4 = - 
C. a1 = 1, a2 = - a3 = a4 = - 
D. a1 = 1, a2 = a3 = - a4 = 


Answer: C

Mathematics

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