Statistics & Probability
Exponential PDF
Density of the exponential distribution.
Formula
Formula
f(x) = λ e−λx
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| λ | rate | computed result | — | result |
| x | value (≥ 0) | real number (ℝ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenλ = 0.5, x = 2
Result0.1839397206
Example 2
Givenλ = 1, x = 0
Result1