Answer:
(a) (-∞, -8) (-6, -4) (-2, ∞)
(b) -6, -2
(c) negative
(d) 5
Step-by-step explanation:
(a) A function is "decreasing" when the y-value decreases as the x-value increases.
⇒ the function is decreasing over these intervals : (-∞, -8) (-6, -4) (-2, ∞)
(b) Local maxima are the points on the function where it reaches a maximum.
⇒ maxima at x = -6 and x = -2
(c) negative
(d) 5
Answer:140 meters
Step-by-step explanation:1km=100m, 1.4km times 100=140
Idk if the hight is 9 units but if it is the answer is 1385.44 units cubed.
= (cos2x+1)(cos2x+1)/4 