Answer:
pretty sure it's B
Step-by-step explanation:
domain is x numbers and that has all the x numbers in it
x = normal water level
x - 12 - 13 = x - 25
so it is 25 feet below the normal water level
The point of inflection is calculated by equating the second derivative to zero and determining x from there.
f"(x) = -x²2xsinx² + cosx²(2x) = 0
2xcosx² - 2x³sinx² = 0
2x (cosx² - xsinx²) = 0
2x = 0 ⇒ x = 0
cosx² - xsinx² = 0 ⇒ x = 3.82 (if you use shift+solve in your scientific calculator)
Thus, the function only has 1 point of inflection and it is at x = 0.
Answer:
Step-by-step explanation:
