Question

what is the explicit formula for this sequence? (-5,-3,-1,1,3)

Answer 1

This sequence is in the form of AP.

here,

First term(a)=-5

common difference(d)=[-3-(-5)]=2.

•°• an= a+(n-1)d.

Sn=n/2[2a+(n-1)d.

If you have any other problem related to this then plz comment.