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Find the numerical answer to the summation given below.

sum_(n=1)^(95)(2n+1)
Answer:

Find the numerical answer to the summation given below.\newlinen=195(2n+1) \sum_{n=1}^{95}(2 n+1) \newlineAnswer:

Full solution

Q. Find the numerical answer to the summation given below.\newlinen=195(2n+1) \sum_{n=1}^{95}(2 n+1) \newlineAnswer:
  1. Identify Arithmetic Series: To solve the summation of the sequence, we need to find the sum of the arithmetic series. The given series is an arithmetic series because each term increases by a constant difference, which is 22 in this case. The first term of the series when n=1n=1 is 2(1)+1=32(1) + 1 = 3, and the last term when n=95n=95 is 2(95)+1=1912(95) + 1 = 191. The sum of an arithmetic series can be found using the formula S=n2×(a1+an)S = \frac{n}{2} \times (a_1 + a_n), where SS is the sum of the series, nn is the number of terms, a1a_1 is the first term, and ana_n is the last term.
  2. Determine Number of Terms: First, we need to determine the number of terms in the series. Since the series starts at n=1n=1 and ends at n=95n=95, there are 9595 terms in total.
  3. Apply Sum Formula: Now we can use the sum formula for an arithmetic series: S=n2×(a1+an)S = \frac{n}{2} \times (a_1 + a_n). Plugging in the values we have S=952×(3+191)S = \frac{95}{2} \times (3 + 191).
  4. Calculate First and Last Term: Perform the calculation inside the parentheses first: 3+191=1943 + 191 = 194.
  5. Perform Multiplication: Now multiply the number of terms divided by 22 with the sum of the first and last term: S=952×194S = \frac{95}{2} \times 194.
  6. Find the Sum: Calculate the multiplication: S=47.5×194S = 47.5 \times 194.
  7. Find the Sum: Calculate the multiplication: S=47.5×194S = 47.5 \times 194.Perform the multiplication to find the sum: S=9215S = 9215.

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