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To find the sum of a series, fill the respected boxes with starting and ending values, and equation in the summation notation or sigma calculator.

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Table of Contents:

This Summation calculator (solver) computes the partial sum of a series. User can choose between

- Simple sum calculator (Enter numbers simply)
- Sigma notation calculator (equation needed)

Summation aka sum is the result obtained after adding the numbers of a sequence.

Summation notation () is used to represent a long sum in a single expression.

Solve:

** Solution**:

**Step 1:** understand the operations:

Values = 3 to 7 = 3, 4, 5, 6, 7

Equation = 2n - 3

**Step 2:** Put the values in the equation:

**3 **= 2(3) - 3 = 3

**4** = 2(4) - 3 = 5

**5 **= 2(5) - 3 = 7

**6** = 2(6) - 3 = 9

**7** = 2(7) - 3 = 11

**Step 3:** Add all the results:

= 3 + 5 + 7 + 9 + 11

= 35

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