Предмет: Математика, автор: qaz123123123

lim ((x+h)^3-x^3)/h при h>0

Ответы

Автор ответа: Аноним

lim ((x+h)^3-x^3)/h=lim ((x+h-x)*((x+h)^2+(x+h)x+x^2))/h=lim (h*((x+h)^2+(x+h)x+x^2))/h=
lim (((x+h)^2+(x+h)x+x^2))=3x^2

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Українська література, автор: diana0046

сила народу у його єдності (по твору Захар беркут) твір срочноооо!!!!!!!!!!

6 лет назад

Предмет: Право, автор: dariafefczak

До правомірної поведінки не належить поведінка?

6 лет назад

Предмет: Английский язык, автор: sshopa97

30 БАЛОВ!
I. Choose the odd word out.

1.ordinary,typical,incredible,usual

2.comedy,mystery,science fiction, novel

3.spiky,wavy,middle aged, curly

4.plump,slim,freckles,well-build

II. Put the verbs into the Present Simple, Present Continuous, Past Simple, Past Continuous.

1.I …..( study) in my bedroom at the moment, but I can join you in the park later.

2.Tom ……..(watch)TV when Jane arrived.

3.Water………..(not, boil) at 80C.

4.The policeman asked, «What………(you, do) at the time of the robbery?»

III. Fill in: why, who, whose, where, which, when.

1.A doctor is someone……..helps sick people.

2.Do you know……book this is?

3. It was summer time……we decided to go on holiday to New York.

4. Tom is very reliable. That’s……I like him.

IV. Complete the sentences using in ,out, up, on, with, into.

1. John gave……boxing two years ago because of a bad injury.

2. That blouse goes really well……your skirt.

3. I ran…….an old friend at the supermarket yesterday.

4. Go…… I’m listening to you.

V. Choose the correct response.

1.What’s your sister like?

a) She is tall with freckles. b) She is very sociable.

2.What’s the best way to avoid pickpockets?

a) Don’t be so silly. b) You should look after your wallet.

3. I’ve got some good news.

a) That’s amazing! b) Sure

4. I need to get more exercise.

a) Why don’t you go home b) How about joining a gym?

VI. Read the text and answer the questions.

Help Hearts

On 20th August, a ‘Help Hearts’ charity event took place in the town of Whitefall. A group of nurses from one of the local hospitals came up with the idea and over 1000 people of all ages took part.

Luckily, it was a sunny day. Everyone had fun either swimming, walking or windsurfing. Thanks to the event, 5000$ was raised for the charity.

Bob Keene, one of the people who organized the event , said,’ We wanted to do something useful for others and this seemed the most fun thing to do.

The hospital administrators were so proud, they decided to make the event part of the hospital’s yearly calendar.

1. What was the name of the organizations that raised the money?

2. Who planned the event?

3. How many people took part?

4. What was the weather like during the event?

5. What happened as result of the event

6 лет назад

Предмет: История, автор: dashayakunya

дайте оценку военно-организаторской деятельности барклая де толли в первые месяцы войны

9 лет назад

Предмет: Алгебра, автор: Aiymkaa

найти производную функции f(x)=3ln*x+1/6

9 лет назад