Решите задания по Вышей математике.
1.Найти длину дуги кардиоиды r = 2 (1-cosf), которая расположена в середине круга r * больше или меньше 1.
2.Найти статический момент относительно оси Ох однородной фигуры , которая ограничена линиями y=4-x^2, y=3,если плотность материала Y=1
A: Where were you last night?
B: I was at the cinema. I was watching a great film when a fire broke out.
A: Oh gosh! How did it happen?
B: Someone had dropped a match into a waste-paper basket.
2.
A: Did you go to the beach on Saturday?
B: No. I went on Sunday instead.
A: Did you have a good time?
B: No. I didn't. I was sunbathing when it started raining, so I left in a hurry.
3.
A: I lost my keys yesterday.
B: Where did you lose them?
A: I don't know. I went shopping and when I got back. I realised that I had left my keys somewhere.