Предмет: Алгебра, автор: artoymki

как найти график функции y=x*x+1

Ответы

Автор ответа: Аноним

1) определить тип - это парабола
2) найти координаты вершины
3) определить направление ветвей параболы
4) построить

artoymki: я это понимаю), но как найти кординаты?

Аноним: вершина в точке (0,1), ветви вверх

artoymki: а от куда 0?

artoymki: меня на графиках небыло

Аноним: м=-в/2а=0/2=0

artoymki: спасибо)

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It is sunny today. It is very hot. We are hot. We take a big towel, three cups, three plates, some milk, some meat, three apples and go to the lake.

The lake is big and the water in the lake is cold. We swim and play. Then we go out. Blackie does not go out. He is in the lake.

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"Eat the meat. I can fish here."

So Blackie is in the water. The water is cold. Pinky is not happy. She is sad. She looks at me and says:

"Reddy, what can we do?"

"Wait and see," I say.

Blackie is fishing now. He is not looking at me. I walk into the water and dive. Now I am under the water. I swim to Blackie under the water. Now I can see his legs. I open my mouth and bite him.

"Help!" cries Blackie. "There is a monster in the water."

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"There is a monster in the lake!" he says to Pinky.

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"Yes, it has got red ears and very sharp teeth!"

Pinky looks at Blackie. She knows that monster but she says:

"Don't go into the water again! I know that monster. It is in one of my books. It is a terrible monster!"

"OK," says Blackie. He is afraid. He looks at Pinky and says:

"And where is Reddy?"

"Oh no!" cries Pinky. "He is in the water!"

"Oh no!" cries Blackie. "The monster can bite him!"

They look at the lake. I am swimming in the lake.

"Reddy, come out!" cry Pinky and Blackie. "There is a terrible monster in the water!" says Blackie.

"Is it big?" I ask.

"It is long and it has got red ears and very sharp teeth!"

"But I am not afraid of monsters. I have got sharp teeth, too," I say. "I am not going out. The water is warm now. Don't wait for me. Have breakfast."

"Oh!" says Pinky. "Again."

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Exercises
1 Answer the questions.

1. What's the weather like today?

2. Are the kittens hot?

3. What do they take?

4. Where do they go?

5. Is the water hot?

6. Who is the monster with red ears?

7. Who is the monster with a black tail?
3 True or false?

1. Blackie is sad.

2. Reddy bites Pinky.

3. Pinky is under the water.

4. There is a monster in the lake.

5. The lake is small.

6. Pinky is swimming in the lake.

7. Blackie is afraid of the monster.

4 Put the sentences in the correct order.

1. The kittens go the lake.

2. It is sunny today.

3. Reddy eats the meat.

4. Reddy bites Blackie.

5. Reddy dives into the water.

6. Blackie runs out of the water.

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