СКОЛЬКО ЗДЕСЬ БУКВ??? The pronunciation of his last name was repeatedly disputed both in the united - id1458203720220418 от соня230403 18.04.2022 19:53

Question

Математика: СКОЛЬКО ЗДЕСЬ БУКВ??? The pronunciation of his last name was repeatedly disputed both in the united states and in other countries. in russia, the pronunciation groening is widespread, but the animator himself insists that his last name rhymes with the word complaining , which he mentioned in one of his comics and in an interview with rolling stone magazine. in the series the simpsons, where he appears, his last name is pronounced groening . Я ЗНАЮ МОЖНО САМОМУ ПОСЧИТАТЬ НО Я СОМНЕВАЮСЬ

соня230403 · Accepted Answer

Решение
Находим первую производную функции:
y' = -( - x + 13)e^(- x + 13) - e^(- x + 13)
или
y' = (x -14)e^(- x + 13)
Приравниваем ее к нулю:
(x - 14) e^(- x + 13) = 0
e^(- x + 13) ≠ 0
x - 14 = 0
x = 14
Вычисляем значения функции
f(14) = 1/e
Используем достаточное условие экстремума функции одной переменной. Найдем вторую производную:
y'' = (- x + 13)e^(- x + 13) + 2e^(- x + 13)
или
y'' = (- x+15)e^(- x + 13)
Вычисляем:
y'' (14) = (- 14+15)e^(- 14 + 13) = e⁻¹ = 1/e
y''(14) = 1/e > 0 - значит точка x = 14 точка минимума функции.

MOGZ ответил