Предмет: Алгебра, автор: Kofigimun

√x <= x-1
Помогите решить, плез!

Ответы

Автор ответа: mikael2

x≥0
√x≤x-1
x≤x²-2x+1 x²-3x+1≥0 D=9-4=5
x1=1/2[3-√5] =1.5-√5/2
x2=1.5+√5/2

---------------x1---------------------x2-----------------
+ - +

x∈(1.5+√5/2;∞)

Kofigimun: Спасибо!

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Химия, автор: sinnikita89

3. Напишите изомеры 2,4,6-триметилфенола.

1 год назад

Предмет: Физика, автор: SeverS1de

Промінь світла проходить з води в повітря. кут падіння променя складає 52°. визначити кут заломлення променя в повітрі

1 год назад

Предмет: Химия, автор: Аноним

допоможіть будь ласка срочно ((((((

1 год назад

Предмет: Информатика, автор: geka155

Тема: Указатели и ссылки. Нужно написать код этих двух программ, желательно с пояснениями(С++)

7 лет назад

Предмет: Английский язык, автор: kb210500

Тема :"Модальные глаголы" Помогите срочно нужно,на выполнение теста дается 40 минут
1. What shall we give Jane on her birthday? - We ... give her a book.
а)сould
б)has to
в)was able
г)needn't have
2.Do you know if Kate likes chocolate? - I'm not sure. She ... like chocolate.

а)should have been
б)must have
в)can't have
г)might
3. Do you know if he was serious? - I'm not sure. He ... have been serious.

а)needs to be
б)can't be
в)are able to
г)might
4. We tried hard but we ... persuade them to join us.

а)couldn't
б)may have
в)might have
г)don't need
5. You've been travelling all day. You ... very tired.

а)can
б)must be
в)may have
г)will be able
6. Where are you going to hang that picture? - I haven't made up my mind yet but I ... hang it in the kitchen.

а)may
б)could have
в)would be
г)can't have
7. Oh dear, it's later than I thought. I ... to go now.

а)needn't have
б)is to
в)have to
г)can't have
8.John seems to know a lot about history. He ... have read a lot of books.

а)should be
б)could be
в)must
г)can't be
9. Nobody knows where Jack is. He ... be having lunch.

а)must have been
б)can have
в)should have
г)might
10. One ... talk loudly in the library

а)mustn't
б)couldn't have been
в)might have
г)should be doing
11.There are a lot of clouds in the sky. It ... rain.

а)may
б)should
в)had to
г)could have
12.When a boy, Tim was an excellent tennis player. He ... beat anybody.

а)must have
б)could have
в)could
г)might have
13. Carol knows a lot about plants. She... be a biologist.

а)couldn't have been
б)can't have
в)could have been
г)must
14.What shall we do this evening? We ... go for a walk.

а)must be
б)should have
в)can be
г)could
15.She ... have been listening to our conversation. It was private.

а)are to
б)shouldn't
в)have to
г)can't be
16.When I woke up this morning, the light was on. I ... have forgotten to turn it off.

а)can be
б)will be
в)had to
г)must
17. She passed me in the street without speaking. She ... have seen me.

а)can't
б)should be
в)am able
г)have to
18. ... I have these postcards please?

а)were able to
б)can
в)ought to have
г)will be
19.Don passed the exam, but he didn't study very much for it. The exam ... have been very difficult.

а)shouldn't be
б)are able
в)must be
г)can't
20. He spoke in a low voice but I ... understand what he was saying.

а)is able
б)has to
в)could
г)might be

7 лет назад

√x <= x-1 Помогите решить, плез!

Ответы

√x <= x-1
Помогите решить, плез!