**Math Summation Notation**

In mathematical formula it is indeed the addition of many number or variable which represent to give concise expression for sum of the variable as Sigma or Summation.

This expressions shows that sum of values of x, which starting at x_{1} and it ending with x_{n} .

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This expressions shows that sum of values of x, which starting at x_{1} and it ending with x_{10} .

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This expressions shows that sum the squared values of x, which starting at x_{1} and it ending with x_{n}.

**Series Summation formula:**

* n = Number of terms

* i = Number sequence

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