Viet N.

asked • 02/25/19

Recursive Rule Question, Book Answer is weird

Given Sequence:7,3,4,-1,5....

Book Answer a1=7,a2=3 an=an-2-an-1

Shouldn't the answer be an=an-1-an-2 ? Because 7-3 gives you 4, and if you do 3-7 it gives you -4 not 4.

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