Предмет: Математика, автор: kotyaravoin1

найдите точки экстриума функции.(с решением),пожалуйста
y=x³-4x²

Ответы

Автор ответа: lollabies7
0
найдем производную
y'=3x²-8x
приравняем к нулю
3x²-8x=0
x*(3x-8)=0
x=0 или
3x=8 ⇒ x=8/3
ответ: 0; 8/3
Похожие вопросы
Предмет: Английский язык, автор: freegge
99 БАЛОВ ДАЮ Put the verb into the correct form, present simple or past simple, active or passive.

1 lt's a big factory. Five hundred people . ………………………………….(employ) there.
2 ……………………………………………(somebody I clean) this room yesterday?
3 Water .... . ........ .... (cover) most of the earth's surface.
4 How much of the earth's surface ..................... (cover) by water?
5 The park gates ................. ....... ........ ........... .. .. (lock) at 6.30 p.m. every evening.
6 The letter ............................ . . . . .. . (send) a week ago and it (arrive) ........ ........ ......... ... ... yesterday.
7 The boat hit a rock and .......................................................... (sink) quickly. Fortunately everybody
_.. ..... .. .......... .................... .... .... . ...... (rescue).
8 Robert's parents . . .. . .. . .. .. (die) when he was very young. He and his sister
______ .................. . ........... (bring up) by their grandparents.
9 I was born in London, but I ........ ... (grow up) in Canada.
10 While I was on holiday, my camera ......... ................ _.. .................... (steal) from my hotel room.
11 While I was on holiday, my camera ....................................................... (disappear) from my hotel room.
12 Why .. ...... ..................... .. ........................ (Sue I resign) from her job? Didn't she enjoy it?
13 Why ... ........ ........... ...... ... ..... ... . ..... (Ben I fire) from his job? Did he do something wrong?
14 The company is not independent. lt .. ...... . ..................... ...... (own) by a much larger company.
15 I saw an accident last night. Somebody ....................... .... (call) an ambulance but nobody
..... .. ........ ..... ...................... ......... (injure), so the ambulance ....... ........ .. .................................. ....... (not I need).
16 Where .................................................. ..... ... .......... ..... ............ . . ...................... (these pictures I take)? In London?
.... .. ...... .. ........................................ (you I take) them, or somebody else?
17 Sometimes it's quite noisy living here, but it's not a problem for me -
I ... ..... . ..... .. ... . ........ (not I bother) by it.