8.14 problem 7 (a)

Internal problem ID [12392]

Book: Ordinary Differential Equations by Charles E. Roberts, Jr. CRC Press. 2010
Section: Chapter 2. The Initial Value Problem. Exercises 2.4.4, page 115
Problem number: 7 (a).
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

\[ \boxed {y^{\prime }+\frac {3 x^{2}}{2 y}=0} \] With initial conditions \begin {align*} [y \left (-1\right ) = 1] \end {align*}

Solution by Maple

Time used: 0.016 (sec). Leaf size: 12

dsolve([diff(y(x),x)=-3*x^2/(2*y(x)),y(-1) = 1],y(x), singsol=all)
 

\[ y \left (x \right ) = \left (-x \right )^{\frac {3}{2}} \]

Solution by Mathematica

Time used: 0.144 (sec). Leaf size: 14

DSolve[{y'[x]==-3*x^2/(2*y[x]),{y[-1]==1}},y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \sqrt {-x^3} \]