упражнения для поперечного шпагата!!! Очень срочно нужно!!! Ещё упражнения для фигуры. Напишите пожалуйста!!!

Переведите пожалуйста. 

Только не нужно присылать неадекватный перевод! (вроде того который выдает он-лайн переодчик например) 

SEASONS AND WEATHER
There are four seasons in a year: winter, spring, summer and autumn. Each of them lasts three months. Summer is my favourite season. June, July and August are summer months. When summer comes, the weather gets warmer and sometimes it can be very hot. In summer people spend much time in the open. They find time to go to the forest or to swim in the river. School-, children like their summer holidays. Autumn comes in September with the beginning of the school year. It is the time when fruit and vegetables become ripe. It is a very beautiful time of the year when the weather is still warm and the leaves change their colour from green to yellow and red. But then it gets colder. The leaves fall from the trees and cover the ground. Birds fly away to warm countries. Then winter comes. Winter is usually a cold season. It often snows, rivers and lakes are frozen. The sun sets early and rises late especially in December and January. The days are short, the sky is often grey. Every New Year begins in winter on the first of January. It's a holiday and people decorate their flats with New Year trees. Spring begins in March. The weather gets better and the sun shines more brightly. The days become longer.  The birds return from the South and make their nests. It sometimes rains but the sky is usually bright-blue and it is warm.

Найдите точку минимума функции y = - x / (x^2 + 1). 
Не могу найти производную. Получается -2x^-1. В общем, хелп! 

в2х банках-7л воды в4х-? в 6-? в 8-? в 20-?(в задаче 5 действий, только целые числа 3,5 не проходили)