Find the sum of the first five terms of the arithmetic series: an = 2n +2. Solution:- Find a1 and a5 and use the formula for the sum of an…
Tag: arithmetic series
Problem 687
Find the sum of the first five terms of the arithmetic series: an =4n +7 Solution:- Find a1 and an by using the explicit formula for arithmetic sequence: an = a1…
Problem 588
Find S20 for the arithmetic series 8 + 16 + 24 + 32 +… Solution:- a1 = 8, d =8 S20 = n/2[2*a1 + (n-1)*d] S20 = 20/2[2*8 + (20-1)*8]…
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