1.5 problem HW 1 problem 10

Internal problem ID [7033]

Book: Selected problems from homeworks from different courses
Section: Math 2520, summer 2021. Differential Equations and Linear Algebra. Normandale college, Bloomington, Minnesota
Problem number: HW 1 problem 10.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, `class A`], _rational, [_Abel, `2nd type`, `class A`]]

\[ \boxed {y^{\prime }-\frac {2 x -y}{x +4 y}=0} \] With initial conditions \begin {align*} [y \left (1\right ) = 1] \end {align*}

Solution by Maple

Time used: 0.14 (sec). Leaf size: 19

dsolve([diff(y(x),x)=(2*x-y(x))/(x+4*y(x)),y(1) = 1],y(x), singsol=all)
 

\[ y \left (x \right ) = -\frac {x}{4}+\frac {\sqrt {9 x^{2}+16}}{4} \]

Solution by Mathematica

Time used: 0.482 (sec). Leaf size: 24

DSolve[{y'[x]==(2*x-y[x])/(x+4*y[x]),{y[1]==1}},y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \frac {1}{4} \left (\sqrt {9 x^2+16}-x\right ) \]