<-- Enter math constant expression

Evaluate and explain this math constant

e

##### Explain e

You entered Euler's Constant e

This constant is approximated at 2.718281828459

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This constant is approximated at 2.718281828459
##### How does the Mathematical Constants and Identities Calculator work?
Free Mathematical Constants and Identities Calculator - Calculates and explains various mathematical constants such as:
* Gelfonds (Gelfond‘s) Constant
* Eulers Constant

This calculator has 1 input.

### What 3 formulas are used for the Mathematical Constants and Identities Calculator?

I = √-1
e = 2.71828183
π = 3.14159265359

For more math formulas, check out our Formula Dossier

### What 3 concepts are covered in the Mathematical Constants and Identities Calculator?

constant
a value that always assumes the same value independent of how its parameters are varied
identity
an equality that holds true regardless of the values chosen for its variables
imaginary number
a real number multiplied by the imaginary unit i, which is defined by its property i2 = -1.