1:49:30
What is the formula for the arithmetic sequence if the sum of the same sequence is
given by Sn = 2n + 3n??
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Answered by
1
Answer:
The sum of the first n terms in an arithmetic sequence is (n/2)⋅(a₁+aₙ). It is called the arithmetic series formula
Answered by
0
Answer:
Sn=2n+3n
n/2( 2a+(n-1)d) = 2n+3n
2a+(n-1)d= 4n+6n/n
2a+(n-1)d= 2n(2+3)/n
2a+(n-1)d= 10
a+ an=10
a+(n-1)d= 10-a
This is the formula of the arithmetic sequence.
Step-by-step explanation:
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