IOM 2018, Блиц, английски — Задача 12

OLYMPIAD OF METROPOLISES. Moscow, September 3 · 3 септември 2018 г.

Условие

Below is the graph of the derivative f′(x)f'(x) of the function f(x)f(x) defined on the interval (−11,11)(-11, 11). How many local maximum points of the function f(x)f(x) lie in the interval [−10,10][-10, 10]?

Graph of y = f′(x) on a square grid from x = −11 to x = 11, with axes x and y, marks −11, 0, 1 and 11, and the label y = f′(x) in the upper right corner; the curve crosses the x axis several times.

Отговори

Решение

Оригинал в Архива: blitz.pdf · официални решения: blitz-answers.pdf