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:
63.
Step-by-step explanation:
49 plus 37 is 86. subtract that by 23 and you get 63.
Arc FE: 76°
arc DEF: 180°
arc CFD: 284°
arc DFE: 256°
A = (1/2)*b*h = (1/2)*8*10 = 40 . . . . units^2
