// / 2 \ \
|| | 5*(3 + x) / __________\| | // / / __________\ \ \ // / / __________\ \ \ // / / __________\\ \
|| |-5 - ---------- | / 2 || | || | 4 2 | / 2 | | | || | 2 | / 2 | | | || | 4 6 2 | / 2 || |
|| 2 | 3 5*atanh\\/ (3 + x) /| | || 2 | -45 - 20*(3 + x) + 75*(3 + x) 45*atanh\\/ (3 + x) / | | || 2 | -15 + 10*(3 + x) 15*atanh\\/ (3 + x) / | | || 2 | -135 - 305*(3 + x) + 40*(3 + x) + 360*(3 + x) 135*atanh\\/ (3 + x) /| |
||(3 + x) *|--------------- + ----------------------| | ||(3 + x) *|-------------------------------------- + ------------------------| | ||(3 + x) *|------------------------- - ------------------------| | ||(3 + x) *|------------------------------------------------------ - ------------------------| |
|| | 4 __________ | | || | 6 4 8 __________ | | || | 4 6 __________ | | || | 8 4 10 6 __________ | |
|| | (3 + x) / 2 4| | || |- 8*(3 + x) + 4*(3 + x) + 4*(3 + x) / 2 4| | || |- 2*(3 + x) + 2*(3 + x) / 2 4| | || |- 24*(3 + x) - 8*(3 + x) + 8*(3 + x) + 24*(3 + x) / 2 4| |
|| \ \/ (3 + x) *(3 + x) / | || \ 4*\/ (3 + x) *(3 + x) / | 2| | || \ 2*\/ (3 + x) *(3 + x) / | 2| | || \ 8*\/ (3 + x) *(3 + x) / | 2| |
||--------------------------------------------------- for And(x > -4, x < -2)| ||---------------------------------------------------------------------------- for |(3 + x) | < 1| ||--------------------------------------------------------------- for |(3 + x) | < 1| ||-------------------------------------------------------------------------------------------- for |(3 + x) | < 1|
|| 5 | || 5 | || 5 | || 5 |
- 8*|< | - 6*|< | + 12*|< | + |< |
|| oo | || oo | || oo | || oo |
|| ____ | || ____ | || ____ | || ____ |
|| \ ` | || \ ` | || \ ` | || \ ` |
|| \ 2*n | || \ 2 2*n | || \ 2*n | || \ 3 2*n |
|| \ (3 + x) | || \ n *(3 + x) | || \ n*(3 + x) | || \ n *(3 + x) |
|| / ---------- otherwise | || / ------------- otherwise | || / ------------ otherwise | || / ------------- otherwise |
|| / 3 + 2*n | || / 3 + 2*n | || / 3 + 2*n | || / 3 + 2*n |
|| /___, | || /___, | || /___, | || /___, |
|| n = 1 | \\ n = 1 / \\ n = 1 / \\ n = 1 /
\\ /
$$- 8 \left(\begin{cases} \frac{\left(x + 3\right)^{2} \left(\frac{- \frac{5 \left(x + 3\right)^{2}}{3} - 5}{\left(x + 3\right)^{4}} + \frac{5 \operatorname{atanh}{\left(\sqrt{\left(x + 3\right)^{2}} \right)}}{\left(x + 3\right)^{4} \sqrt{\left(x + 3\right)^{2}}}\right)}{5} & \text{for}\: x > -4 \wedge x < -2 \\\sum_{n=1}^{\infty} \frac{\left(x + 3\right)^{2 n}}{2 n + 3} & \text{otherwise} \end{cases}\right) + 12 \left(\begin{cases} \frac{\left(x + 3\right)^{2} \left(\frac{10 \left(x + 3\right)^{2} - 15}{2 \left(x + 3\right)^{6} - 2 \left(x + 3\right)^{4}} - \frac{15 \operatorname{atanh}{\left(\sqrt{\left(x + 3\right)^{2}} \right)}}{2 \left(x + 3\right)^{4} \sqrt{\left(x + 3\right)^{2}}}\right)}{5} & \text{for}\: \left|{\left(x + 3\right)^{2}}\right| < 1 \\\sum_{n=1}^{\infty} \frac{n \left(x + 3\right)^{2 n}}{2 n + 3} & \text{otherwise} \end{cases}\right) - 6 \left(\begin{cases} \frac{\left(x + 3\right)^{2} \left(\frac{- 20 \left(x + 3\right)^{4} + 75 \left(x + 3\right)^{2} - 45}{4 \left(x + 3\right)^{8} - 8 \left(x + 3\right)^{6} + 4 \left(x + 3\right)^{4}} + \frac{45 \operatorname{atanh}{\left(\sqrt{\left(x + 3\right)^{2}} \right)}}{4 \left(x + 3\right)^{4} \sqrt{\left(x + 3\right)^{2}}}\right)}{5} & \text{for}\: \left|{\left(x + 3\right)^{2}}\right| < 1 \\\sum_{n=1}^{\infty} \frac{n^{2} \left(x + 3\right)^{2 n}}{2 n + 3} & \text{otherwise} \end{cases}\right) + \begin{cases} \frac{\left(x + 3\right)^{2} \left(\frac{40 \left(x + 3\right)^{6} - 305 \left(x + 3\right)^{4} + 360 \left(x + 3\right)^{2} - 135}{8 \left(x + 3\right)^{10} - 24 \left(x + 3\right)^{8} + 24 \left(x + 3\right)^{6} - 8 \left(x + 3\right)^{4}} - \frac{135 \operatorname{atanh}{\left(\sqrt{\left(x + 3\right)^{2}} \right)}}{8 \left(x + 3\right)^{4} \sqrt{\left(x + 3\right)^{2}}}\right)}{5} & \text{for}\: \left|{\left(x + 3\right)^{2}}\right| < 1 \\\sum_{n=1}^{\infty} \frac{n^{3} \left(x + 3\right)^{2 n}}{2 n + 3} & \text{otherwise} \end{cases}$$
-8*Piecewise(((3 + x)^2*((-5 - 5*(3 + x)^2/3)/(3 + x)^4 + 5*atanh(sqrt((3 + x)^2))/(sqrt((3 + x)^2)*(3 + x)^4))/5, (x > -4)∧(x < -2)), (Sum((3 + x)^(2*n)/(3 + 2*n), (n, 1, oo)), True)) - 6*Piecewise(((3 + x)^2*((-45 - 20*(3 + x)^4 + 75*(3 + x)^2)/(-8*(3 + x)^6 + 4*(3 + x)^4 + 4*(3 + x)^8) + 45*atanh(sqrt((3 + x)^2))/(4*sqrt((3 + x)^2)*(3 + x)^4))/5, Abs((3 + x)^2) < 1), (Sum(n^2*(3 + x)^(2*n)/(3 + 2*n), (n, 1, oo)), True)) + 12*Piecewise(((3 + x)^2*((-15 + 10*(3 + x)^2)/(-2*(3 + x)^4 + 2*(3 + x)^6) - 15*atanh(sqrt((3 + x)^2))/(2*sqrt((3 + x)^2)*(3 + x)^4))/5, Abs((3 + x)^2) < 1), (Sum(n*(3 + x)^(2*n)/(3 + 2*n), (n, 1, oo)), True)) + Piecewise(((3 + x)^2*((-135 - 305*(3 + x)^4 + 40*(3 + x)^6 + 360*(3 + x)^2)/(-24*(3 + x)^8 - 8*(3 + x)^4 + 8*(3 + x)^10 + 24*(3 + x)^6) - 135*atanh(sqrt((3 + x)^2))/(8*sqrt((3 + x)^2)*(3 + x)^4))/5, Abs((3 + x)^2) < 1), (Sum(n^3*(3 + x)^(2*n)/(3 + 2*n), (n, 1, oo)), True))