Try it yourself:
| @1 |
e
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| @2 |
e ^ 2
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| @3 |
exp(2)
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| @4 |
log(e)
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e is the base of natural logarithms, approximately 2.71828. It describes continuous growth and exponential decay.
Use exp() for e raised to a value and log() for its inverse. Exponential arguments should be dimensionless; scale physical values before use.
Enter e on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.