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# Math 11 Sequences and Series Blog Post

1.1 Arithmetic Sequences

1.common difference=Tn-Tn-1

2.The Formula for the General Term of an Arithmetic Sequence

The formula for the general term of an arithmetic sequence is

Tn=T1+(n-1)d or Tn=a+(n-1)d

(explain why you add 9 not 10 common difference to find term 10)

1.2 Arithmetic Series

1.for example. 3,5,7,9,11————-arithmetic sequence

3+5+7+9+11———arithmetic series.

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

1.3