2.14.3.38 problem 238 out of 2993

Link to actual problem [1351] \[ \boxed {x^{2} \left (-x^{2}+2\right ) y^{\prime \prime }-2 x \left (2 x^{2}+1\right ) y^{\prime }+\left (-2 x^{2}+2\right ) y=0} \] With the expansion point for the power series method at \(x = 0\).

type detected by program

{"second order series method. Regular singular point. Repeated root"}

type detected by Maple

[[_2nd_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 [\underline {\hspace {1.25 ex}}\xi &= 0, \underline {\hspace {1.25 ex}}\eta &= \frac {x}{\left (x^{2}-2\right )^{\frac {3}{2}}}\right ] \\ \left [R &= x, S \left (R \right ) &= \frac {\left (x^{2}-2\right )^{\frac {3}{2}} y}{x}\right ] \\ \end{align*}

\begin{align*} \left [\underline {\hspace {1.25 ex}}\xi &= 0, \underline {\hspace {1.25 ex}}\eta &= \frac {x \sqrt {2}}{x^{2}-2}+\frac {2 x \arctan \left (\frac {\sqrt {2}}{\sqrt {x^{2}-2}}\right )}{\left (x^{2}-2\right )^{\frac {3}{2}}}\right ] \\ \left [R &= x, S \left (R \right ) &= \frac {\left (x^{2}-2\right )^{\frac {5}{2}} y}{x \left (\sqrt {2}\, \left (x^{2}-2\right )^{\frac {3}{2}}+2 \arctan \left (\frac {\sqrt {2}}{\sqrt {x^{2}-2}}\right ) x^{2}-4 \arctan \left (\frac {\sqrt {2}}{\sqrt {x^{2}-2}}\right )\right )}\right ] \\ \end{align*}