sum of first nth term sum of first
Answer (1)
31st Jul, 2020
Hello aspirant
The sum of first nth term
According to the formula - The sum of the first n the term of arithmetic sequence is equal to n divided by 2 times the sum of twice the beginning term a , and product of the common difference and n -1
∑ ( a +kd) = n/2 [ 2a + (n-1) d]
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