2.21 problem 46

Internal problem ID [5256]

Book: Schaums Outline. Theory and problems of Differential Equations, 1st edition. Frank Ayres. McGraw Hill 1952
Section: Chapter 4. Equations of first order and first degree (Variable separable). Supplemetary problems. Page 22
Problem number: 46.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

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

Solution by Maple

Time used: 0.0 (sec). Leaf size: 9

dsolve([x*diff(y(x),x)+2*y(x)= 0,y(2) = 1],y(x), singsol=all)
 

\[ y = \frac {4}{x^{2}} \]

Solution by Mathematica

Time used: 0.023 (sec). Leaf size: 10

DSolve[{x*y'[x]+2*y[x]==0,{y[2]==1}},y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \frac {4}{x^2} \]