Assuming summing is required, and a is required, and trigonometric is required, and series is required, the following results were found.

  • Symbols and Notation

    -the set of positive integers and zero –x is greater than y is greater than –x is less than y x >=y – x is greater than or equal to y -the set of integers, -the set of positive integers, -the set of rational numbers -the set of positive rational...

    https://astarmathsandphysics.com/igcse-maths-notes/532-symbols-and-notation.html
  • Symbols and Notation

    the set of positive integers and zero the set of integers the set of positive integers is less than is greater than is less than or equal to is greater than or equal to is not equal to the set of rational numbers the set of positive rational numbers...

    https://astarmathsandphysics.com/?id=1335:symbols-and-notation&catid=97

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