EXPPOWDIST(x,a,b)
EXPPOWDIST returns the probability density p(x) at x for Exponential Power distribution with scale parameter a and exponent b.
This distribution has been recommended for lifetime analysis when a U-shaped hazard function is desired. This corresponds to rapid failure once the product starts to wear out after a period of steady or even improving reliability.
EXPPOWDIST(0.4,1,2).