GENERAL: Airplane Flight Path In Exercise 67 on page 192 it was found that the fligh...

GENERAL: Airplane Flight Path In Exercise 67 on page 192 it was found that the flight path that satisfies the conditions in the following diagram was y = -0.00001x³ + 0.0015x². Find the inflection point of this path, and explain why it represents the point of steepest ascent of the airplane.

Exercise 67:

BUSINESS: Point of Diminishing Returns Find the point of diminishing returns for each revenue function where x is the amount spent on advertising, both in hundred thousand dollars.