58.1.42 problem 42

Internal problem ID [9113]
Book : Second order enumerated odes
Section : section 1
Problem number : 42
Date solved : Monday, January 27, 2025 at 05:42:18 PM
CAS classification : [[_2nd_order, _linear, _nonhomogeneous]]

\begin{align*} y^{\prime \prime }+y&=x^{3}+x^{2}+x +1 \end{align*}

✓ Solution by Maple

Time used: 0.003 (sec). Leaf size: 23

dsolve(diff(y(x),x$2)+y(x)=1+x+x^2+x^3,y(x), singsol=all)
 

\[ y = \sin \left (x \right ) c_{2} +\cos \left (x \right ) c_{1} +x^{3}+x^{2}-5 x -1 \]

✓ Solution by Mathematica

Time used: 0.014 (sec). Leaf size: 26

DSolve[D[y[x],{x,2}]+y[x]==1+x+x^2+x^3,y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to x^3+x^2-5 x+c_1 \cos (x)+c_2 \sin (x)-1 \]