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докажите что функция F(x) является первообразной для функции f(x) на множистве R . F(x)=x⁴-3; f(x)=4x³;
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Предмет:
Математика -
Автор:
baby doll - 5 лет назад
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Ответы 1
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Надо проверить равенство: F' = fF'(x) = 4x³ = f(x) , ⇒ F(x) - первообразная для f(x)
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Автор:
buddyilhs - 5 лет назад
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7. Comlete the text with the words from the box and say what you have learned about the Scots.
bagpipes ■ kilt, kilts ■ tartan ■ ceilidh ■ Highland Games ■ to hold ■ to refuse ■ good at
Many Scots play the ... and wear a .......... are made of ... . The pattern
of ... is very important. It is a family symbol. The Scots are very friendly people. They like to dance and play ... . People come to a ... and dance to folk music. You cannot _____ anyone a dance. At the end of the ____ the Scots always ____ hands together and sing « Auld Lang Syne». The Scots are _____ dancing and playing.
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Highland Games
Highland Games are held all over Scotland from May till September. They are competitions in pipe playing, dancing and tossing the caber1 (where a man has to carry a tree trunk2 and throw it as far as he can). The games started in the 14th century. People wanted to show who was the strongest.
Scottish Ceilidh
The word "ceilidh” means "to visit someone". At a ceilidh people meet, sing, tell stories and dance. You should never refuse anyone a dance. You should never be sad at a ceilidh.
Kilt
Kilts are made of tartans3. In past times it could be used as camouflage, as a sleeping bag and protection against the rainy climate. Today kilts are worn at different family and university ceremonies and by the army as a ceremonial dress.
Bagpipe
Originally the bagpipe was a traditional Irish instrument, but it has become the symbol of Scottish music. It is difficult to play the bagpipe and it takes many years of hard work to train a bagpiper.
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