2.38 problem 37

Internal problem ID [6420]

Book: Own collection of miscellaneous problems
Section: section 2.0
Problem number: 37.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_2nd_order, _linear, _nonhomogeneous]]

\[ \boxed {y^{\prime \prime }-y x^{2}-x^{4}+2=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 34

dsolve(diff(y(x),x$2)-x^2*y(x)-x^4+2=0,y(x), singsol=all)
 

\[ y \left (x \right ) = \sqrt {x}\, \operatorname {BesselI}\left (\frac {1}{4}, \frac {x^{2}}{2}\right ) c_{2} +\sqrt {x}\, \operatorname {BesselK}\left (\frac {1}{4}, \frac {x^{2}}{2}\right ) c_{1} -x^{2} \]

Solution by Mathematica

Time used: 3.427 (sec). Leaf size: 217

DSolve[y''[x]-x^2*y[x]-x^4+2==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to \operatorname {ParabolicCylinderD}\left (-\frac {1}{2},\sqrt {2} x\right ) \left (\int _1^x-\frac {\left (K[1]^4-2\right ) \operatorname {ParabolicCylinderD}\left (-\frac {1}{2},i \sqrt {2} K[1]\right )}{\sqrt {2} \left (\operatorname {HermiteH}\left (-\frac {1}{2},i K[1]\right ) \operatorname {HermiteH}\left (\frac {1}{2},K[1]\right )+\operatorname {HermiteH}\left (-\frac {1}{2},K[1]\right ) \left (-i \operatorname {HermiteH}\left (\frac {1}{2},i K[1]\right )-2 \operatorname {HermiteH}\left (-\frac {1}{2},i K[1]\right ) K[1]\right )\right )}dK[1]+c_1\right )+\operatorname {ParabolicCylinderD}\left (-\frac {1}{2},i \sqrt {2} x\right ) \left (\int _1^x\frac {\left (K[2]^4-2\right ) \operatorname {ParabolicCylinderD}\left (-\frac {1}{2},\sqrt {2} K[2]\right )}{\sqrt {2} \left (\operatorname {HermiteH}\left (-\frac {1}{2},i K[2]\right ) \operatorname {HermiteH}\left (\frac {1}{2},K[2]\right )+\operatorname {HermiteH}\left (-\frac {1}{2},K[2]\right ) \left (-i \operatorname {HermiteH}\left (\frac {1}{2},i K[2]\right )-2 \operatorname {HermiteH}\left (-\frac {1}{2},i K[2]\right ) K[2]\right )\right )}dK[2]+c_2\right ) \\ \end{align*}