2.15.1.35 problem 35 out of 249

Link to actual problem [5820] \[ \boxed {x^{4} y^{\prime \prime \prime \prime }-x^{2} y^{\prime \prime }+y=0} \]

type detected by program

{"higher_order_ODE_non_constant_coefficients_of_type_Euler"}

type detected by Maple

[[_high_order, _with_linear_symmetries]]

Maple symgen result This shows Maple’s found \(\xi ,\eta \) and the corresponding canonical coordinates \(R,S\)\begin{align*} \\ \\ \end{align*}

\begin{align*} \\ \left [R &= x, S \left (R \right ) &= \frac {y}{\moverset {4}{\munderset {\textit {\_a} &=1}{\sum }}x^{\operatorname {RootOf}\left (\textit {\_Z}^{4}-6 \textit {\_Z}^{3}+10 \textit {\_Z}^{2}-5 \textit {\_Z} +1, \operatorname {index} &=\textit {\_a} \right )} \textit {\_C}_{\textit {\_a}}}\right ] \\ \end{align*}

\begin{align*} \\ \\ \end{align*}

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