59.1.601 problem 617

Internal problem ID [9773]
Book : Collection of Kovacic problems
Section : section 1
Problem number : 617
Date solved : Monday, January 27, 2025 at 06:14:06 PM
CAS classification : [[_2nd_order, _with_linear_symmetries]]

\begin{align*} 4 x^{2} \left (1+x \right ) y^{\prime \prime }+4 x \left (1+4 x \right ) y^{\prime }-\left (49+27 x \right ) y&=0 \end{align*}

✓ Solution by Maple

Time used: 0.042 (sec). Leaf size: 26

dsolve(4*x^2*(1+x)*diff(y(x),x$2)+4*x*(1+4*x)*diff(y(x),x)-(49+27*x)*y(x)=0,y(x), singsol=all)
 

\[ y = \frac {c_{1} x^{7}+7 c_{2} x +6 c_{2}}{\left (x +1\right )^{2} x^{{7}/{2}}} \]

✓ Solution by Mathematica

Time used: 0.235 (sec). Leaf size: 102

DSolve[4*x^2*(1+x)*D[y[x],{x,2}]+4*x*(1+4*x)*D[y[x],x]-(49+27*x)*y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \exp \left (\int _1^x\left (\frac {4}{K[1]}-\frac {1}{2 (K[1]+1)}\right )dK[1]-\frac {1}{2} \int _1^x\left (\frac {3}{K[2]+1}+\frac {1}{K[2]}\right )dK[2]\right ) \left (c_2 \int _1^x\exp \left (-2 \int _1^{K[3]}\frac {7 K[1]+8}{2 K[1]^2+2 K[1]}dK[1]\right )dK[3]+c_1\right ) \]