Answer: (a) When is the directional derivative of a
Chapter 11, Problem 42(choose chapter or problem)
(a) When is the directional derivative of a maximum? (b) When is it a minimum? (c) When is it 0? (d) When is it half of its maximum value?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer