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The mathematical constant denoted e is the base of the natural logarithm which has value of approximately 2.718.
E is a high school-level concept that would be first encountered in a pre-calculus course covering exponents and logarithms. It is listed in the California State Standards for Algebra II.
Prerequisites
| Irrational Number: | An irrational number is a real number that cannot be written as a fraction. Irrational numbers have decimal expansions that neither terminate nor become periodic. |
| Natural Logarithm: | The natural logarithm is the logarithm having base e. |