2.15.2.69 problem 169 out of 249

Link to actual problem [11271] \[ \boxed {x^{3} y^{\prime \prime \prime }+y^{\prime } x -y=\ln \left (x \right ) x} \]

type detected by program

{"higher_order_ODE_non_constant_coefficients_of_type_Euler"}

type detected by Maple

[[_3rd_order, _with_linear_symmetries]]

Maple symgen result This shows Maple’s found \(\xi ,\eta \) and the corresponding canonical coordinates \(R,S\)\begin{align*} \\ \left [R &= x, S \left (R \right ) &= \frac {y}{x}\right ] \\ \end{align*}

\begin{align*} \\ \left [R &= x, S \left (R \right ) &= \frac {y}{x \ln \left (x \right )}\right ] \\ \end{align*}

\begin{align*} \\ \left [R &= x, S \left (R \right ) &= \frac {y}{\ln \left (x \right )^{2} x}\right ] \\ \end{align*}