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∫tan3(x)sec4(x)dx
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Solution
tan4(x)4+tan6(x)6+C
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Solve by:
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∫tan3(x)sec4(x)dx
Перепишите используя тригонометрические тождества
=∫(1+tan2(x))sec2(x)tan3(x)dx
Применить подстановку интеграла:∫u3(1+u2)du
=∫u3(1+u2)du
Расширить u3(1+u2):u3+u5
=∫u3+u5du
Применить правило суммы: ∫f(x)±g(x)dx=∫f(x)dx±∫g(x)dx