/ / / 4*x\\
| | 9*log|1 - ---||
| | 3 \ 3 /|
|2*x*|- --- - --------------|
| | 2*x 2 |
| \ 8*x /
|---------------------------- for And(x >= -3/4, x < 3/4)
| 3
|
< oo
| ____
| \ `
| \ -n n n
| \ 3 *4 *x
| / --------- otherwise
| / 1 + n
| /___,
| n = 1
\
$$\begin{cases} \frac{2 x \left(- \frac{3}{2 x} - \frac{9 \log{\left(1 - \frac{4 x}{3} \right)}}{8 x^{2}}\right)}{3} & \text{for}\: x \geq - \frac{3}{4} \wedge x < \frac{3}{4} \\\sum_{n=1}^{\infty} \frac{3^{- n} 4^{n} x^{n}}{n + 1} & \text{otherwise} \end{cases}$$
Piecewise((2*x*(-3/(2*x) - 9*log(1 - 4*x/3)/(8*x^2))/3, (x >= -3/4)∧(x < 3/4)), (Sum(3^(-n)*4^n*x^n/(1 + n), (n, 1, oo)), True))