Предмет: Алгебра, автор: borissetinin5

а31=-15 а33=-79 найти а32-?​

Ответы

Автор ответа: ildar502020
0

Ответ:           -47.

Объяснение:

an - арифметическая прогрессия

а31=-15

а33=-79

*********

найти а32-?​

Решение

a(n) = (a(n-1) + a(n+1))/2.

a(32) = (a(31) + (a*(33))/2 = (-15+(-79))/2 = -94/2 = -47.

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Химия, автор: boggorohov
4. Дізнайтеся значення поняття «релігійна нетерпимість» та наведіть

докази існування релігійної нетерпимості в середньовічній Іспанії.

Всесвітня робота ДАЮ 29 БАЛОВ
2 года назад
Предмет: Право, автор: sasagonta2000
1) За допомогою методу «Мікрофон» закiнчiть речення: Громадянство України Для мене це...
​
2 года назад
Предмет: Английский язык, автор: pavelkozlov698
Помогите пожалуйста расскрыть скобки
Scene 1
Jake: Detective, I’m so glad you’re here.
Detective: This better be quick. I _________ (fly) to Greenland to stop an international drug deal after I _________ (finish) here.
Jake: Something terrible _________ (happen) yesterday at 2:39 PM. My paperclip _________ (take).
Detective: What?! Your paperclip? I cannot believe that you called me for a paperclip that was taken yesterday! You should _________ (call) me immediately after this happened. I _________ (cancel – отменять) my Greenland trip.
Jake: Yes, good idea. In fact, terrible things _________ (happen) here all week.
Detective: Ok. You _________ (need) to explain this to me in just a few minutes, but first right now I _________ (check) my Instagram. My friend Jake always _________ (post) terrible pictures.
Jake: That’s alright. You know where to find me. I _________ (sit) at my desk when you finish.
Scene 2
Detective: Ok, tell me exactly what happened.
Jake: I _________ (put) a paperclip on my desk at exactly 2:35. Then, I had to leave to take a phone call. By the time I _________ (get) back, someone _________ (take) my paperclip.
Detective: I don’t know why someone would do such a thing.
Jake: All week long someone _________ (take) from the office. There has been an extreme shortage, so recently loose papers _________ (fly) around like crazy. You must _________ (find out) who has been doing this.
Detective: You can count on me.
Scene 3

Detective: This was found at the crime scene. The thief must _________ (be) a woman who wears jewelry.
Jake: And she must _________ (be) a woman with small hands. I guess it could _________ (be) a child, but probably not because kids never _________ (use) paper clips.
Detective: That’s true.
Scene 4
Detective: Ok. I have a few questions that I need to ask you about the moment the crime occurred. What _________ (do) yesterday at exactly 2:39PM?
Suspect 1: I was sitting outside and I _________ (eat) at 2:39.
Detective: And you were eating your food?
Suspect 1: Well, not exactly. You see, right before 2:39, I _________ (find) some free food on the table, so I was eating it.
Detective: Hmm. I see. Then it couldn’t have been you. You could _________ (not, take) the paperclip. It’s just not possible.
Suspect 1: That’s right.
Scene 5
Detective: What are you doing?
Suspect 2: I _________ (not, do) anything!
Detective: I _________ (look) for you for a long time.
Suspect 2: But why?! I _________ (not, do) anything wrong…yet.
Detective: Ok…what’s in your hand?
Suspect 2: What are you talking about? My hand _________ (cut off) years ago in a scissors accident!
Detective: By the time I _________ (finish) this case, the Greenland drug deal _________ (start) and _________ (end) already.
Scene 6
Jake: What are you doing?
Detective: I _________ (look) for a woman with two hands.
Jake: Well, that lady has two hands.
Detective: What?! Where? Jake: I know she has two hands because she always _________ (wear) gloves…two of them!
Detective: Let’s go!
Scene 7
Detective: I need to ask you some questions, and I hope you have a good alibi. Where were you yesterday?
Suspect 3: I was in…um…I was in Papertown. You _________ (never, hear) of it. It’s in another country. It’s near…um…Pinkland.
Detective: Pinkland? Papertown? Ok, well then show me the stamp in your passport.
Suspect 3: I _________ (not, have) a passport. I mean, I _________ (not, have) a passport yesterday. What I mean is, I _________ (never, own) a passport in my life!
Detective: Ok, ma’am, you’re making your situation worse by the minute. I can see that you have two hands! Now tell me about the jewelry that you usually _________ (wear).
Suspect 3: I usually just wear rings.
Detective: Ok. You usually wear rings, but you _________ (not, wear) any rings today.
Suspect 3: So? I have plenty of other fashionable jewelry – like my necklace, but you could _________ (not, see) it because it’s been under my shirt.
Detective: Why don’t you want me to see your necklace?
Suspect 3: What? No! Yesterday, at 2:39 I right before the incident, I _________ (ski) for two hours.
Detective: Impossible! You couldn’t have been skiing. It’s way too hot for snow. Now show me your necklace.
Suspect 3: Never!
Detective: What! Where did you get this?
Suspect 3: I got it in um…Greenland.
2 года назад
Предмет: Физика, автор: alimyham80
Отынның жану процесіндегі жылу мөлшерін анықтайтын формуланы тиісті физикалық шамалармен толықтыр.
7 лет назад
Предмет: Математика, автор: Marys67
Решить производную функции
У=(6х^2-2/х^4+5)^2
7 лет назад