$\frac{\sin\left(x-y\right)+\sin\left(x+y\right)}{\cos\left(x+y\right)+\cos\left(x-y\right)}$

$\lim_{x\to1}\left(\frac{ln\left(x\right)}{x-1}\right)^2$

$\sin^2\left(36.87\right)$

$\left(x^2+xy-3y+y^2\right)\left(x^2+xy-3y+y^2\right)$

$\lim_{x\to\infty}\left(1-sin\left(\frac{1}{5n}\right)\right)^{4n}$

$\int\left(10x-6x^4\right)\sqrt{10x^2-\frac{12}{5}x^3}dx$

$\left(-x^2y^3\cdot\left(-y^2\right)^0\right)^4$