Consider f(z) = - 8253z Determine the intervals on which f is decreasing. Of is decreasing on: Of is decreasing nowhere. Determine the intervals on which f is increasing. Of is increasing on: Of is increasing nowhere. Determine the value and location of any local minimum of f. Enter the solution in (z, f(z)) form. If multiple solutions exist, use a comma-separated list to enter the solutions. Of has a local minimum at: Of has no local minimum. Determine the value and location of any local maximum of f. Enter the solution in (z, f(z)) form. If multiple solutions exist, use a comma-separated list to enter the solutions. Of has a local maximum at: f has no local maximum.