// / / 1 x\\ \ // / / 1 x\ / 1 x\\ \ // / / 1 x\\ \ // / / 1 x\ / 1 x\\ \
|| | 8*polylog|3, - + -|| | || | 8*polylog|3, - + -| 8*polylog|2, - + -|| | || | 8*polylog|3, - + -|| | || | 8*polylog|3, - + -| 8*polylog|2, - + -|| |
||/1 x \ | 8 \ 3 3/| |1 x| | ||/1 x \ | \ 3 3/ \ 3 3/| |1 x| | ||/1 x \ | 8 \ 3 3/| |1 x| | ||/1 x \ | \ 3 3/ \ 3 3/| |1 x| |
|||-- + --|*|- ----- + -------------------| for |- + -| <= 1| |||-- + --|*|- ------------------- + -------------------| for |- + -| <= 1| |||-- + --|*|- ----- + -------------------| for |- + -| <= 1| |||-- + --|*|- ------------------- + -------------------| for |- + -| <= 1|
||\24 24/ | 1 x 2 | |3 3| | ||\24 24/ | 2 2 | |3 3| | ||\24 24/ | 1 x 2 | |3 3| | ||\24 24/ | 2 2 | |3 3| |
|| | - + - /1 x\ | | || | /1 x\ /1 x\ | | || | - + - /1 x\ | | || | /1 x\ /1 x\ | |
|| | 3 3 |- + -| | | || | |- + -| |- + -| | | || | 3 3 |- + -| | | || | |- + -| |- + -| | |
|| \ \3 3/ / | || \ \3 3/ \3 3/ / | || \ \3 3/ / | || \ \3 3/ \3 3/ / |
|| | || | || | || |
- 2*|< oo | + 3*|< oo | - 2*x*|< oo | + 3*x*|< oo |
|| ____ | || ____ | || ____ | || ____ |
|| \ ` | || \ ` | || \ ` | || \ ` |
|| \ -n n | || \ -n n | || \ -n n | || \ -n n |
|| \ 3 *(1 + x) | || \ n*3 *(1 + x) | || \ 3 *(1 + x) | || \ n*3 *(1 + x) |
|| ) ------------ otherwise | || ) -------------- otherwise | || ) ------------ otherwise | || ) -------------- otherwise |
|| / 3 | || / 3 | || / 3 | || / 3 |
|| / (1 + n) | || / (1 + n) | || / (1 + n) | || / (1 + n) |
|| /___, | || /___, | || /___, | || /___, |
\\ n = 1 / \\ n = 1 / \\ n = 1 / \\ n = 1 /
$$3 x \left(\begin{cases} \left(\frac{x}{24} + \frac{1}{24}\right) \left(\frac{8 \operatorname{Li}_{2}\left(\frac{x}{3} + \frac{1}{3}\right)}{\left(\frac{x}{3} + \frac{1}{3}\right)^{2}} - \frac{8 \operatorname{Li}_{3}\left(\frac{x}{3} + \frac{1}{3}\right)}{\left(\frac{x}{3} + \frac{1}{3}\right)^{2}}\right) & \text{for}\: \left|{\frac{x}{3} + \frac{1}{3}}\right| \leq 1 \\\sum_{n=1}^{\infty} \frac{3^{- n} n \left(x + 1\right)^{n}}{\left(n + 1\right)^{3}} & \text{otherwise} \end{cases}\right) - 2 x \left(\begin{cases} \left(\frac{x}{24} + \frac{1}{24}\right) \left(- \frac{8}{\frac{x}{3} + \frac{1}{3}} + \frac{8 \operatorname{Li}_{3}\left(\frac{x}{3} + \frac{1}{3}\right)}{\left(\frac{x}{3} + \frac{1}{3}\right)^{2}}\right) & \text{for}\: \left|{\frac{x}{3} + \frac{1}{3}}\right| \leq 1 \\\sum_{n=1}^{\infty} \frac{3^{- n} \left(x + 1\right)^{n}}{\left(n + 1\right)^{3}} & \text{otherwise} \end{cases}\right) + 3 \left(\begin{cases} \left(\frac{x}{24} + \frac{1}{24}\right) \left(\frac{8 \operatorname{Li}_{2}\left(\frac{x}{3} + \frac{1}{3}\right)}{\left(\frac{x}{3} + \frac{1}{3}\right)^{2}} - \frac{8 \operatorname{Li}_{3}\left(\frac{x}{3} + \frac{1}{3}\right)}{\left(\frac{x}{3} + \frac{1}{3}\right)^{2}}\right) & \text{for}\: \left|{\frac{x}{3} + \frac{1}{3}}\right| \leq 1 \\\sum_{n=1}^{\infty} \frac{3^{- n} n \left(x + 1\right)^{n}}{\left(n + 1\right)^{3}} & \text{otherwise} \end{cases}\right) - 2 \left(\begin{cases} \left(\frac{x}{24} + \frac{1}{24}\right) \left(- \frac{8}{\frac{x}{3} + \frac{1}{3}} + \frac{8 \operatorname{Li}_{3}\left(\frac{x}{3} + \frac{1}{3}\right)}{\left(\frac{x}{3} + \frac{1}{3}\right)^{2}}\right) & \text{for}\: \left|{\frac{x}{3} + \frac{1}{3}}\right| \leq 1 \\\sum_{n=1}^{\infty} \frac{3^{- n} \left(x + 1\right)^{n}}{\left(n + 1\right)^{3}} & \text{otherwise} \end{cases}\right)$$
-2*Piecewise(((1/24 + x/24)*(-8/(1/3 + x/3) + 8*polylog(3, 1/3 + x/3)/(1/3 + x/3)^2), |1/3 + x/3| <= 1), (Sum(3^(-n)*(1 + x)^n/(1 + n)^3, (n, 1, oo)), True)) + 3*Piecewise(((1/24 + x/24)*(-8*polylog(3, 1/3 + x/3)/(1/3 + x/3)^2 + 8*polylog(2, 1/3 + x/3)/(1/3 + x/3)^2), |1/3 + x/3| <= 1), (Sum(n*3^(-n)*(1 + x)^n/(1 + n)^3, (n, 1, oo)), True)) - 2*x*Piecewise(((1/24 + x/24)*(-8/(1/3 + x/3) + 8*polylog(3, 1/3 + x/3)/(1/3 + x/3)^2), |1/3 + x/3| <= 1), (Sum(3^(-n)*(1 + x)^n/(1 + n)^3, (n, 1, oo)), True)) + 3*x*Piecewise(((1/24 + x/24)*(-8*polylog(3, 1/3 + x/3)/(1/3 + x/3)^2 + 8*polylog(2, 1/3 + x/3)/(1/3 + x/3)^2), |1/3 + x/3| <= 1), (Sum(n*3^(-n)*(1 + x)^n/(1 + n)^3, (n, 1, oo)), True))