x*sin(x)
- -------- + log(cos(x), 2)
cos(x)
$$- \frac{x \sin{\left(x \right)}}{\cos{\left(x \right)}} + \log{\left(\cos{\left(x \right)} \right)}$$
/ / 2 \ \
| | sin (x)| 2*sin(x)|
-|x*|1 + -------| + --------|
| | 2 | cos(x) |
\ \ cos (x)/ /
$$- (x \left(\frac{\sin^{2}{\left(x \right)}}{\cos^{2}{\left(x \right)}} + 1\right) + \frac{2 \sin{\left(x \right)}}{\cos{\left(x \right)}})$$
/ 2 \
| sin (x)| / 2*x*sin(x)\
-|1 + -------|*|3 + ----------|
| 2 | \ cos(x) /
\ cos (x)/
$$- \left(\frac{\sin^{2}{\left(x \right)}}{\cos^{2}{\left(x \right)}} + 1\right) \left(\frac{2 x \sin{\left(x \right)}}{\cos{\left(x \right)}} + 3\right)$$