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Реши любую задачу с помощью нейросети.
Дано
$$cos{left (x right )} cos{left (2 x right )} + cos{left (- x + 6 pi right )} – sin{left (x right )} sin{left (2 x right )}$$
Подстановка условия
$$cos{left (x right )} cos{left (2 x right )} + cos{left (- x + 6 pi right )} – sin{left (x right )} sin{left (2 x right )}$$
cos(2*(-1/4))*cos((-1/4)) + cos(6*pi – (-1/4)) – sin(2*(-1/4))*sin((-1/4))
$$cos{left ((-1/4) right )} cos{left (2 (-1/4) right )} + cos{left (- (-1/4) + 6 pi right )} – sin{left ((-1/4) right )} sin{left (2 (-1/4) right )}$$
cos(2*(-1)/4)*cos(-1/4) + cos(6*pi – (-1)/4) – sin(2*(-1)/4)*sin(-1/4)
$$- sin{left (- frac{1}{4} right )} sin{left (frac{-2}{4} right )} + cos{left (- frac{1}{4} right )} cos{left (frac{-2}{4} right )} + cos{left (- frac{-1}{4} + 6 pi right )}$$
cos(1/2)*cos(1/4) – sin(1/2)*sin(1/4) + cos(1/4)
$$- sin{left (frac{1}{4} right )} sin{left (frac{1}{2} right )} + cos{left (frac{1}{4} right )} cos{left (frac{1}{2} right )} + cos{left (frac{1}{4} right )}$$
Степени
$$- sin{left (x right )} sin{left (2 x right )} + cos{left (x right )} cos{left (2 x right )} + cos{left (x right )}$$
Численный ответ
cos(x)*cos(2*x) – sin(x)*sin(2*x) + cos(6*pi – x)
Рациональный знаменатель
$$- sin{left (x right )} sin{left (2 x right )} + cos{left (x right )} cos{left (2 x right )} + cos{left (x right )}$$
Объединение рациональных выражений
$$left(cos{left (2 x right )} + 1right) cos{left (x right )} – sin{left (x right )} sin{left (2 x right )}$$
Общее упрощение
cos(x) + cos(3*x)
$$cos{left (x right )} + cos{left (3 x right )}$$
Соберем выражение
$$cos{left (x right )} + cos{left (3 x right )}$$
cos(2*x)*cos(x) – sin(2*x)*sin(x) + cos(6*pi – x)
$$- sin{left (x right )} sin{left (2 x right )} + cos{left (x right )} cos{left (2 x right )} + cos{left (- x + 6 pi right )}$$
Общий знаменатель
cos(x)*cos(2*x) – sin(x)*sin(2*x) + cos(x)
$$- sin{left (x right )} sin{left (2 x right )} + cos{left (x right )} cos{left (2 x right )} + cos{left (x right )}$$
Тригонометрическая часть
cos(x) + cos(3*x)
$$cos{left (x right )} + cos{left (3 x right )}$$
Комбинаторика
cos(x)*cos(2*x) – sin(x)*sin(2*x) + cos(x)
$$- sin{left (x right )} sin{left (2 x right )} + cos{left (x right )} cos{left (2 x right )} + cos{left (x right )}$$
Раскрыть выражение
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cos (x) – sin (x)/*cos(x) – 2*sin (x)*cos(x) + cos(x)
$$left(- sin^{2}{left (x right )} + cos^{2}{left (x right )}right) cos{left (x right )} – 2 sin^{2}{left (x right )} cos{left (x right )} + cos{left (x right )}$$