Q. Find the numerical answer to the summation given below.n=0∑72(6n+3)Answer:
Calculate number of terms: We need to find the sum of the arithmetic series given by the formula 6n+3 from n=0 to n=72. The general formula for the sum of an arithmetic series is S=2n×(a1+an), where n is the number of terms, a1 is the first term, and an is the last term.
Find first term: First, we calculate the number of terms in the series. Since we start at n=0 and go to n=72, we have 72−0+1=73 terms.
Find last term: Next, we find the first term of the series by substituting n=0 into the formula (6n+3). This gives us a1=6×0+3=3.
Use sum formula: Now, we find the last term of the series by substituting n=72 into the formula (6n+3). This gives us a72=6×72+3=435.
Perform calculation: We can now use the sum formula for an arithmetic series: S=2n×(a1+an). Substituting the values we have, S=273×(3+435).
Multiply by 273: Perform the calculation inside the parentheses first: 3+435=438.
Perform final multiplication: Now, multiply 438 by 273 to find the sum of the series: S=273×438=36.5×438.
Perform final multiplication: Now, multiply 438 by 273 to find the sum of the series: S=273×438=36.5×438.Finally, perform the multiplication to find the sum: S=36.5×438=15987.
More problems from Sum of finite series starts from 1