\[ -3 y'(x) (a+2 \wp (x;\text {g2},\text {g3}))+b y(x)+y^{(3)}(x)=0 \] ✗ Mathematica : cpu = 0.0484378 (sec), leaf count = 0 , could not solve
DSolve[b*y[x] - 3*(a + 2*WeierstrassP[x, {g2, g3}])*Derivative[1][y][x] + Derivative[3][y][x] == 0, y[x], x]
✗ Maple : cpu = 0. (sec), leaf count = 0 , result contains DESol
\[\{y \left (x \right ) = \mathit {DESol}\left (\left \{b \textit {\_Y} \left (x \right )+\left (-3 a -6 \WeierstrassP \left (x , \mathit {g2} , \mathit {g3}\right )\right ) \left (\frac {d}{d x}\textit {\_Y} \left (x \right )\right )+\frac {d^{3}}{d x^{3}}\textit {\_Y} \left (x \right )\right \}, \left \{\textit {\_Y} \left (x \right )\right \}\right )\}\]