# Exponential distribution Calculator

## Calculates the probability density function and lower and upper cumulative distribution functions of the exponential distribution.

 percentile x x≧0 scale parameter b b＞0 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit
 $\normal Exponential\ distribution\\[10](1)\ probability\ density\\\hspace{30}f(x,b)={\large\frac{1}{b}e^{-\frac{x}{b}}}\\(2)\ lower\ cumulative\ distribution\\\hspace{30}P(x,b)={\large\int_{\small 0}^{\hspace{25}\small x}}f(t,b)dt={\large 1-e^{-\frac{x}{b}}}\\(3)\ upper\ cumulative\ distribution\\\hspace{30}Q(x,b)={\large\int_{\small x}^{\hspace{25}\small\infty}}f(t,b)dt={\large e^{-\frac{x}{b}}}\\$

Exponential distribution
 [1-1] /1 Disp-Num5103050100200
[1]  2016/10/24 13:59   Female / 40 years old level / - / Very /
Purpose of use
Mistake in formula (Exponential distribution)
Comment/Request
Formulas for lower and upper cumulative distribution are reversed.
from Keisan
We have corrected the formula.

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