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Mathematics 13 Online
OpenStudy (anonymous):

A sequence is defined by un-2 show that the sequence is arithmetic. hint-find un+1-un

OpenStudy (anonymous):

if un = 2 , then u1 = 2 , u2 = 2 , u3 = 2 ... un = 2 so there is a constant difference un+1 - un = 0

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