The first n terms of sequence {an} and the n-th power of Sn = a (a is a nonzero constant) are known Then [an] is the sequence of equal ratio; it is the sequence of equal difference; it may be equal difference or equal ratio,

The first n terms of sequence {an} and the n-th power of Sn = a (a is a nonzero constant) are known Then [an] is the sequence of equal ratio; it is the sequence of equal difference; it may be equal difference or equal ratio,

a1=s1=a^1-1=a-1
sn=a^n-1
s(n-1)=a^(n-1)-1
Subtraction of two formulas
an=a^n-a^(n-1)
an=(a-1)*a^(n-1)
When a = 1,
It is not only an arithmetic sequence, but also an arithmetic sequence
When a ≠ 1, it is an equal ratio sequence
All three answers are correct

Elden Ring Premiere

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