Internal problem ID [6212]
Book: Elementary differential equations. Rainville, Bedient, Bedient. Prentice Hall. NJ. 8th edition.
1997.
Section: CHAPTER 18. Power series solutions. 18.8 Indicial Equation with Difference of Roots a
Positive Integer: Nonlogarithmic Case. Exercises page 380
Problem number: 1.
ODE order: 2.
ODE degree: 1.
CAS Maple gives this as type [[_2nd_order, _with_linear_symmetries]]
Solve \begin {gather*} \boxed {x^{2} y^{\prime \prime }+2 x \left (x -2\right ) y^{\prime }+2 \left (2-3 x \right ) y=0} \end {gather*} With the expansion point for the power series method at \(x = 0\).
✓ Solution by Maple
Time used: 0.078 (sec). Leaf size: 53
Order:=8; dsolve(x^2*diff(y(x),x$2)+2*x*(x-2)*diff(y(x),x)+2*(2-3*x)*y(x)=0,y(x),type='series',x=0);
\[ y \relax (x ) = c_{1} x^{4} \left (1-\frac {1}{2} x +\frac {1}{5} x^{2}-\frac {1}{15} x^{3}+\frac {2}{105} x^{4}-\frac {1}{210} x^{5}+\frac {1}{945} x^{6}-\frac {1}{4725} x^{7}+\mathrm {O}\left (x^{8}\right )\right )+c_{2} x \left (12-24 x +24 x^{2}-16 x^{3}+8 x^{4}-\frac {16}{5} x^{5}+\frac {16}{15} x^{6}-\frac {32}{105} x^{7}+\mathrm {O}\left (x^{8}\right )\right ) \]
✓ Solution by Mathematica
Time used: 0.153 (sec). Leaf size: 96
AsymptoticDSolveValue[x^2*y''[x]+2*x*(x-2)*y'[x]+2*(2-3*x)*y[x]==0,y[x],{x,0,7}]
\[ y(x)\to c_1 \left (\frac {4 x^7}{45}-\frac {4 x^6}{15}+\frac {2 x^5}{3}-\frac {4 x^4}{3}+2 x^3-2 x^2+x\right )+c_2 \left (\frac {x^{10}}{945}-\frac {x^9}{210}+\frac {2 x^8}{105}-\frac {x^7}{15}+\frac {x^6}{5}-\frac {x^5}{2}+x^4\right ) \]