Дано
$$- 25 sin{left (x right )} cos{left (x right )} cos^{2}{left (y right )} – 25 sin{left (x right )} sin^{2}{left (y right )} cos{left (x right )}$$
Подстановка условия
$$- 25 sin{left (x right )} cos{left (x right )} cos^{2}{left (y right )} – 25 sin{left (x right )} sin^{2}{left (y right )} cos{left (x right )}$$
((-25*sin(x))*cos(x))*cos((-1/3))^2 – (25*cos(x))*sin(x)*sin((-1/3))^2
$$- 25 sin{left (x right )} cos{left (x right )} cos^{2}{left ((-1/3) right )} – 25 sin^{2}{left ((-1/3) right )} sin{left (x right )} cos{left (x right )}$$
((-25*sin(x))*cos(x))*cos(-1/3)^2 – (25*cos(x))*sin(x)*sin(-1/3)^2
$$- 25 sin{left (x right )} cos{left (x right )} cos^{2}{left (- frac{1}{3} right )} – 25 sin^{2}{left (- frac{1}{3} right )} sin{left (x right )} cos{left (x right )}$$
-25*cos(1/3)^2*cos(x)*sin(x) – 25*sin(1/3)^2*cos(x)*sin(x)
$$- 25 sin{left (x right )} cos^{2}{left (frac{1}{3} right )} cos{left (x right )} – 25 sin^{2}{left (frac{1}{3} right )} sin{left (x right )} cos{left (x right )}$$
Степени
$$- 25 sin{left (x right )} sin^{2}{left (y right )} cos{left (x right )} – 25 sin{left (x right )} cos{left (x right )} cos^{2}{left (y right )}$$
Численный ответ
-25.0*cos(y)^2*cos(x)*sin(x) – 25.0*sin(y)^2*cos(x)*sin(x)
Рациональный знаменатель
$$- 25 sin{left (x right )} sin^{2}{left (y right )} cos{left (x right )} – 25 sin{left (x right )} cos{left (x right )} cos^{2}{left (y right )}$$
Объединение рациональных выражений
$$25 left(- sin^{2}{left (y right )} – cos^{2}{left (y right )}right) sin{left (x right )} cos{left (x right )}$$
Общее упрощение
$$- frac{25}{2} sin{left (2 x right )}$$
Соберем выражение
$$- frac{25}{2} sin{left (2 x right )}$$
Общий знаменатель
2 2
– 25*cos (y)*cos(x)*sin(x) – 25*sin (y)*cos(x)*sin(x)
$$- 25 sin{left (x right )} sin^{2}{left (y right )} cos{left (x right )} – 25 sin{left (x right )} cos{left (x right )} cos^{2}{left (y right )}$$
Комбинаторика
/ 2 2
-25*cos (y) + sin (y)/*cos(x)*sin(x)
$$- 25 left(sin^{2}{left (y right )} + cos^{2}{left (y right )}right) sin{left (x right )} cos{left (x right )}$$
Тригонометрическая часть
$$- frac{25}{2} sin{left (2 x right )}$$
Раскрыть выражение
2 2
– 25*cos (y)*cos(x)*sin(x) – 25*sin (y)*cos(x)*sin(x)
$$- 25 sin{left (x right )} sin^{2}{left (y right )} cos{left (x right )} – 25 sin{left (x right )} cos{left (x right )} cos^{2}{left (y right )}$$