Integrand size = 22, antiderivative size = 67 \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=\frac {a (A b-a B)}{b^3 \sqrt {a+b x^2}}+\frac {(A b-2 a B) \sqrt {a+b x^2}}{b^3}+\frac {B \left (a+b x^2\right )^{3/2}}{3 b^3} \]
[Out]
Time = 0.04 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {457, 78} \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=\frac {\sqrt {a+b x^2} (A b-2 a B)}{b^3}+\frac {a (A b-a B)}{b^3 \sqrt {a+b x^2}}+\frac {B \left (a+b x^2\right )^{3/2}}{3 b^3} \]
[In]
[Out]
Rule 78
Rule 457
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {x (A+B x)}{(a+b x)^{3/2}} \, dx,x,x^2\right ) \\ & = \frac {1}{2} \text {Subst}\left (\int \left (\frac {a (-A b+a B)}{b^2 (a+b x)^{3/2}}+\frac {A b-2 a B}{b^2 \sqrt {a+b x}}+\frac {B \sqrt {a+b x}}{b^2}\right ) \, dx,x,x^2\right ) \\ & = \frac {a (A b-a B)}{b^3 \sqrt {a+b x^2}}+\frac {(A b-2 a B) \sqrt {a+b x^2}}{b^3}+\frac {B \left (a+b x^2\right )^{3/2}}{3 b^3} \\ \end{align*}
Time = 0.04 (sec) , antiderivative size = 55, normalized size of antiderivative = 0.82 \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=\frac {6 a A b-8 a^2 B+3 A b^2 x^2-4 a b B x^2+b^2 B x^4}{3 b^3 \sqrt {a+b x^2}} \]
[In]
[Out]
Time = 2.83 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.73
method | result | size |
pseudoelliptic | \(\frac {x^{2} \left (\frac {x^{2} B}{3}+A \right ) b^{2}+2 a \left (-\frac {2 x^{2} B}{3}+A \right ) b -\frac {8 a^{2} B}{3}}{\sqrt {b \,x^{2}+a}\, b^{3}}\) | \(49\) |
gosper | \(\frac {b^{2} B \,x^{4}+3 A \,b^{2} x^{2}-4 B a b \,x^{2}+6 a b A -8 a^{2} B}{3 \sqrt {b \,x^{2}+a}\, b^{3}}\) | \(52\) |
trager | \(\frac {b^{2} B \,x^{4}+3 A \,b^{2} x^{2}-4 B a b \,x^{2}+6 a b A -8 a^{2} B}{3 \sqrt {b \,x^{2}+a}\, b^{3}}\) | \(52\) |
risch | \(\frac {\left (b B \,x^{2}+3 A b -5 B a \right ) \sqrt {b \,x^{2}+a}}{3 b^{3}}+\frac {a \left (A b -B a \right )}{b^{3} \sqrt {b \,x^{2}+a}}\) | \(53\) |
default | \(B \left (\frac {x^{4}}{3 b \sqrt {b \,x^{2}+a}}-\frac {4 a \left (\frac {x^{2}}{\sqrt {b \,x^{2}+a}\, b}+\frac {2 a}{b^{2} \sqrt {b \,x^{2}+a}}\right )}{3 b}\right )+A \left (\frac {x^{2}}{\sqrt {b \,x^{2}+a}\, b}+\frac {2 a}{b^{2} \sqrt {b \,x^{2}+a}}\right )\) | \(94\) |
[In]
[Out]
none
Time = 0.26 (sec) , antiderivative size = 63, normalized size of antiderivative = 0.94 \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=\frac {{\left (B b^{2} x^{4} - 8 \, B a^{2} + 6 \, A a b - {\left (4 \, B a b - 3 \, A b^{2}\right )} x^{2}\right )} \sqrt {b x^{2} + a}}{3 \, {\left (b^{4} x^{2} + a b^{3}\right )}} \]
[In]
[Out]
Time = 0.26 (sec) , antiderivative size = 117, normalized size of antiderivative = 1.75 \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=\begin {cases} \frac {2 A a}{b^{2} \sqrt {a + b x^{2}}} + \frac {A x^{2}}{b \sqrt {a + b x^{2}}} - \frac {8 B a^{2}}{3 b^{3} \sqrt {a + b x^{2}}} - \frac {4 B a x^{2}}{3 b^{2} \sqrt {a + b x^{2}}} + \frac {B x^{4}}{3 b \sqrt {a + b x^{2}}} & \text {for}\: b \neq 0 \\\frac {\frac {A x^{4}}{4} + \frac {B x^{6}}{6}}{a^{\frac {3}{2}}} & \text {otherwise} \end {cases} \]
[In]
[Out]
none
Time = 0.19 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.33 \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=\frac {B x^{4}}{3 \, \sqrt {b x^{2} + a} b} - \frac {4 \, B a x^{2}}{3 \, \sqrt {b x^{2} + a} b^{2}} + \frac {A x^{2}}{\sqrt {b x^{2} + a} b} - \frac {8 \, B a^{2}}{3 \, \sqrt {b x^{2} + a} b^{3}} + \frac {2 \, A a}{\sqrt {b x^{2} + a} b^{2}} \]
[In]
[Out]
none
Time = 0.31 (sec) , antiderivative size = 77, normalized size of antiderivative = 1.15 \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=-\frac {B a^{2} - A a b}{\sqrt {b x^{2} + a} b^{3}} + \frac {{\left (b x^{2} + a\right )}^{\frac {3}{2}} B b^{6} - 6 \, \sqrt {b x^{2} + a} B a b^{6} + 3 \, \sqrt {b x^{2} + a} A b^{7}}{3 \, b^{9}} \]
[In]
[Out]
Time = 5.21 (sec) , antiderivative size = 59, normalized size of antiderivative = 0.88 \[ \int \frac {x^3 \left (A+B x^2\right )}{\left (a+b x^2\right )^{3/2}} \, dx=\frac {B\,{\left (b\,x^2+a\right )}^2-3\,B\,a^2+3\,A\,b\,\left (b\,x^2+a\right )-6\,B\,a\,\left (b\,x^2+a\right )+3\,A\,a\,b}{3\,b^3\,\sqrt {b\,x^2+a}} \]
[In]
[Out]