Помогите дописать интеграл: [tex]\int\limits {cos2x*cos5x*cos7x} \, dx = (cos2x*cos5x)*cos7x = ....[/tex] Ответ: [tex]\frac{1}{4}x + \frac{1}{56} sin14x + \frac{1}{40} sin10x + \frac{1}{16} sin4x + C[/tex]
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