# Probability density function

by reddvoid
Tags: density, function, probability
 P: 99 If probability distribution function is flat like a rectangular signal then probability density function which is differentiation of probability distribution function will have positive and negative impulses, but probability density function cannot be negative. . whats wrong in this . . . Can't probability distribution functio be flat ?
 Mentor P: 9,588 Sometimes, "probability distribution function" is used as "probability density function".
 P: 660 The differentiated function is not a probability.
P: 2,237

## Probability density function

 Quote by Enthalpy The differentiated function is not a probability.

neither is the rectangular function a distribution function. a distribution function must be an increasing function (so that the derivative, which is the p.d.f., is always non-negative).

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