log likelihood and derivatives for exponential distribution

llikExp(x, rate, full = FALSE)

Arguments

x: variable that is distributed by exponential distribution
rate: vector of rates.
full: Add the data frame showing x, mean, sd as well as the fx and derivatives

Value

data frame with fx for the log pdf value of with dRate

that has the derivatives with respect to the rate parameter the observation time-point

Author

Matthew L. Fidler

Examples


llikExp(1, 1:3)
#>          fx      dRate
#> 1 -1.000000  0.0000000
#> 2 -1.306853 -0.5000000
#> 3 -1.901388 -0.6666667

llikExp(1, 1:3, full=TRUE)
#>   x rate        fx      dRate
#> 1 1    1 -1.000000  0.0000000
#> 2 1    2 -1.306853 -0.5000000
#> 3 1    3 -1.901388 -0.6666667