This week is the first week in math 11, so we study the first unit Sequences and Series. The 1.1 Arithmetic Sequences and 1.2 Arithmetic Series. I learned In an arithmetic sequence is the difference between consecutive terms is constant. This constant value is called the common difference. The formal is “d=Tn+(n-1)d.” ” Tn=T1+(n-1)d.”
The second part is Arithmetic Series, The sum of the first n terms of the arithmetic sequence is called an arithmetic series. The formal is Sn=n/2(T1+Tn)
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