2*(2*x + 7) 28 + 8*x
2*atan(2*x + 7) + -------------- - ------------------
2 / 2 \
1 + (2*x + 7) 2*\(2*x + 7) + 1/
$$2 \operatorname{atan}{\left(2 x + 7 \right)} + \frac{2 \cdot \left(2 x + 7\right)}{\left(2 x + 7\right)^{2} + 1} - \frac{8 x + 28}{2 \left(\left(2 x + 7\right)^{2} + 1\right)}$$
4
--------------
2
1 + (7 + 2*x)
$$\frac{4}{\left(2 x + 7\right)^{2} + 1}$$
-16*(7 + 2*x)
-----------------
2
/ 2\
\1 + (7 + 2*x) /
$$- \frac{16 \cdot \left(2 x + 7\right)}{\left(\left(2 x + 7\right)^{2} + 1\right)^{2}}$$