// / / ___\\ \ // / / ___\\ \
|| 2 | 3 3*atanh\\/ x /| | || 2 | 3 - 6*x 3*atanh\\/ x /| |
||x *|- - + --------------| | ||2*x *|----------- + --------------| |
|| | x 3/2 | | || | 2 3/2 | |
|| \ x / | || \-4*x + 4*x 4*x / |
||------------------------- for And(x >= -1, x < 1)| ||----------------------------------- for |x| < 1|
|| 3 | || 3 |
|| | || |
x*|< oo | + 2*x*|< oo |
|| ____ | || ____ |
|| \ ` | || \ ` |
|| \ n | || \ n |
|| \ x | || \ n*x |
|| / -------- otherwise | || / -------- otherwise |
|| / -1 + 2*n | || / -1 + 2*n |
|| /___, | || /___, |
\\ n = 2 / \\ n = 2 /
$$x \left(\begin{cases} \frac{x^{2} \left(- \frac{3}{x} + \frac{3 \operatorname{atanh}{\left(\sqrt{x} \right)}}{x^{\frac{3}{2}}}\right)}{3} & \text{for}\: x \geq -1 \wedge x < 1 \\\sum_{n=2}^{\infty} \frac{x^{n}}{2 n - 1} & \text{otherwise} \end{cases}\right) + 2 x \left(\begin{cases} \frac{2 x^{2} \left(\frac{3 - 6 x}{4 x^{2} - 4 x} + \frac{3 \operatorname{atanh}{\left(\sqrt{x} \right)}}{4 x^{\frac{3}{2}}}\right)}{3} & \text{for}\: \left|{x}\right| < 1 \\\sum_{n=2}^{\infty} \frac{n x^{n}}{2 n - 1} & \text{otherwise} \end{cases}\right)$$
x*Piecewise((x^2*(-3/x + 3*atanh(sqrt(x))/x^(3/2))/3, (x >= -1)∧(x < 1)), (Sum(x^n/(-1 + 2*n), (n, 2, oo)), True)) + 2*x*Piecewise((2*x^2*((3 - 6*x)/(-4*x + 4*x^2) + 3*atanh(sqrt(x))/(4*x^(3/2)))/3, |x| < 1), (Sum(n*x^n/(-1 + 2*n), (n, 2, oo)), True))