Q. Find the numerical answer to the summation given below.n=0∑98(7n+6)Answer:
Recognize Linear Expression Split: Recognize that the summation is of a linear expression in terms of n. The summation can be split into two separate summations: one for the 7n term and one for the constant term 6.
Apply Summation Rule Linear Term: Apply the summation rule for the first term, which is a linear term 7n. The sum of an arithmetic series is given by the formula ∑n=0k(an)=a⋅(2k⋅(k+1)), where a is the constant multiplier of n. In this case, a=7 and k=98.
Calculate Sum First Term: Calculate the sum of the first term using the formula from Step 2.∑n=098(7n)=7×(98×(98+1))/2=7×(98×99)/2=7×(9702)/2=7×4851=33957
Apply Summation Rule Constant Term: Apply the summation rule for the second term, which is a constant term 6. The sum of a constant series is given by the formula ∑n=0k(c)=c⋅(k+1), where c is the constant term. In this case, c=6 and k=98.
Calculate Sum Second Term: Calculate the sum of the second term using the formula from Step 4.∑n=098(6)=6×(98+1)=6×99=594
Add Final Results: Add the results from Step 3 and Step 5 to get the final answer.Final Sum = 33957+594= 34551
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