/x\ /y\ /x y\
cos|-|*cos|-|*cos|- + -|
\2/ \2/ \2 2/
$$\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
cos(x/2)*cos(y/2)*cos(x/2 + y/2)
1 cos(x) cos(y) cos(x + y)
- + ------ + ------ + ----------
4 4 4 4
$$\frac{\cos{\left(x \right)}}{4} + \frac{\cos{\left(y \right)}}{4} + \frac{\cos{\left(x + y \right)}}{4} + \frac{1}{4}$$
1/4 + cos(x)/4 + cos(y)/4 + cos(x + y)/4
Рациональный знаменатель
[src]
/x\ /y\ /x y\
cos|-|*cos|-|*cos|- + -|
\2/ \2/ \2 2/
$$\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
cos(x/2)*cos(y/2)*cos(x/2 + y/2)
Объединение рациональных выражений
[src]
/x\ /y\ /x y\
cos|-|*cos|-|*cos|- + -|
\2/ \2/ \2 2/
$$\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
cos(x/2)*cos(y/2)*cos(x/2 + y/2)
/x\ /y\ /x y\
cos|-|*cos|-|*cos|- + -|
\2/ \2/ \2 2/
$$\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
/ /x y\ / x y\\ / I*x -I*x \ / I*y -I*y \
| I*|- + -| I*|- - - -|| | --- -----| | --- -----|
| \2 2/ \ 2 2/| | 2 2 | | 2 2 |
|e e | |e e | |e e |
|---------- + ------------|*|---- + ------|*|---- + ------|
\ 2 2 / \ 2 2 / \ 2 2 /
$$\left(\frac{e^{\frac{i x}{2}}}{2} + \frac{e^{- \frac{i x}{2}}}{2}\right) \left(\frac{e^{\frac{i y}{2}}}{2} + \frac{e^{- \frac{i y}{2}}}{2}\right) \left(\frac{e^{i \left(- \frac{x}{2} - \frac{y}{2}\right)}}{2} + \frac{e^{i \left(\frac{x}{2} + \frac{y}{2}\right)}}{2}\right)$$
(exp(i*(x/2 + y/2))/2 + exp(i*(-x/2 - y/2))/2)*(exp(i*x/2)/2 + exp(-i*x/2)/2)*(exp(i*y/2)/2 + exp(-i*y/2)/2)
cos(x/2)*cos(y/2)*cos((x + y)/2)
cos(x/2)*cos(y/2)*cos((x + y)/2)
/x\ /y\ /x y\
cos|-|*cos|-|*cos|- + -|
\2/ \2/ \2 2/
$$\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
cos(x/2)*cos(y/2)*cos(x/2 + y/2)
/x\ /y\ /x y\
cos|-|*cos|-|*cos|- + -|
\2/ \2/ \2 2/
$$\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
cos(x/2)*cos(y/2)*cos(x/2 + y/2)
/x\ /y\ /x y\
cos|-|*cos|-|*cos|- + -|
\2/ \2/ \2 2/
$$\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
2/x\ 2/y\ /x\ /y\ /x\ /y\
cos |-|*cos |-| - cos|-|*cos|-|*sin|-|*sin|-|
\2/ \2/ \2/ \2/ \2/ \2/
$$- \sin{\left(\frac{x}{2} \right)} \sin{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} + \cos^{2}{\left(\frac{x}{2} \right)} \cos^{2}{\left(\frac{y}{2} \right)}$$
cos(x/2)^2*cos(y/2)^2 - cos(x/2)*cos(y/2)*sin(x/2)*sin(y/2)