4.21.21 \(y'(x)^3=a+b x\)

ODE
\[ y'(x)^3=a+b x \] ODE Classification

[_quadrature]

Book solution method
Missing Variables ODE, Dependent variable missing, Solve for \(y'\)

Mathematica
cpu = 0.173536 (sec), leaf count = 80

\[\left \{\left \{y(x)\to \frac {3 (a+b x)^{4/3}}{4 b}+c_1\right \},\left \{y(x)\to -\frac {3 \sqrt [3]{-1} (a+b x)^{4/3}}{4 b}+c_1\right \},\left \{y(x)\to \frac {3 (-1)^{2/3} (a+b x)^{4/3}}{4 b}+c_1\right \}\right \}\]

Maple
cpu = 0.201 (sec), leaf count = 68

\[\left [y \left (x \right ) = \frac {3 \left (b x +a \right )^{\frac {4}{3}}}{4 b}+\textit {\_C1}, y \left (x \right ) = \frac {3 i \left (b x +a \right )^{\frac {4}{3}} \left (i-\sqrt {3}\right )}{8 b}+\textit {\_C1}, y \left (x \right ) = \frac {3 i \left (b x +a \right )^{\frac {4}{3}} \left (\sqrt {3}+i\right )}{8 b}+\textit {\_C1}\right ]\] Mathematica raw input

DSolve[y'[x]^3 == a + b*x,y[x],x]

Mathematica raw output

{{y[x] -> (3*(a + b*x)^(4/3))/(4*b) + C[1]}, {y[x] -> (-3*(-1)^(1/3)*(a + b*x)^(
4/3))/(4*b) + C[1]}, {y[x] -> (3*(-1)^(2/3)*(a + b*x)^(4/3))/(4*b) + C[1]}}

Maple raw input

dsolve(diff(y(x),x)^3 = b*x+a, y(x))

Maple raw output

[y(x) = 3/4*(b*x+a)^(4/3)/b+_C1, y(x) = 3/8*I*(b*x+a)^(4/3)*(I-3^(1/2))/b+_C1, y
(x) = 3/8*I*(b*x+a)^(4/3)*(3^(1/2)+I)/b+_C1]