Closed-form MLE for exponential_lifetime

Computes the MLE directly as lambda_hat = d / T, bypassing optim. This demonstrates that specialized models can provide exact solutions.

# S3 method for class 'exponential_lifetime'
fit(object, ...)

Arguments

object

An exponential_lifetime model

...

Additional arguments (ignored)

Value

A solver function that takes (df, par, ...) and returns a fisher_mle object. The par argument is accepted but ignored since the MLE is computed in closed form.