Integrand size = 18, antiderivative size = 118 \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\frac {2 a^3 (A b-a B)}{3 b^5 (a+b x)^{3/2}}-\frac {2 a^2 (3 A b-4 a B)}{b^5 \sqrt {a+b x}}-\frac {6 a (A b-2 a B) \sqrt {a+b x}}{b^5}+\frac {2 (A b-4 a B) (a+b x)^{3/2}}{3 b^5}+\frac {2 B (a+b x)^{5/2}}{5 b^5} \]
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Time = 0.03 (sec) , antiderivative size = 118, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.056, Rules used = {78} \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\frac {2 a^3 (A b-a B)}{3 b^5 (a+b x)^{3/2}}-\frac {2 a^2 (3 A b-4 a B)}{b^5 \sqrt {a+b x}}-\frac {6 a \sqrt {a+b x} (A b-2 a B)}{b^5}+\frac {2 (a+b x)^{3/2} (A b-4 a B)}{3 b^5}+\frac {2 B (a+b x)^{5/2}}{5 b^5} \]
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Rule 78
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a^3 (-A b+a B)}{b^4 (a+b x)^{5/2}}-\frac {a^2 (-3 A b+4 a B)}{b^4 (a+b x)^{3/2}}+\frac {3 a (-A b+2 a B)}{b^4 \sqrt {a+b x}}+\frac {(A b-4 a B) \sqrt {a+b x}}{b^4}+\frac {B (a+b x)^{3/2}}{b^4}\right ) \, dx \\ & = \frac {2 a^3 (A b-a B)}{3 b^5 (a+b x)^{3/2}}-\frac {2 a^2 (3 A b-4 a B)}{b^5 \sqrt {a+b x}}-\frac {6 a (A b-2 a B) \sqrt {a+b x}}{b^5}+\frac {2 (A b-4 a B) (a+b x)^{3/2}}{3 b^5}+\frac {2 B (a+b x)^{5/2}}{5 b^5} \\ \end{align*}
Time = 0.06 (sec) , antiderivative size = 86, normalized size of antiderivative = 0.73 \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\frac {2 \left (128 a^4 B+24 a^2 b^2 x (-5 A+2 B x)+b^4 x^3 (5 A+3 B x)-2 a b^3 x^2 (15 A+4 B x)+a^3 (-80 A b+192 b B x)\right )}{15 b^5 (a+b x)^{3/2}} \]
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Time = 0.53 (sec) , antiderivative size = 75, normalized size of antiderivative = 0.64
method | result | size |
pseudoelliptic | \(-\frac {32 \left (-\frac {\left (\frac {3 B x}{5}+A \right ) x^{3} b^{4}}{16}+\frac {3 x^{2} \left (\frac {4 B x}{15}+A \right ) a \,b^{3}}{8}+\frac {3 x \left (-\frac {2 B x}{5}+A \right ) a^{2} b^{2}}{2}+a^{3} \left (-\frac {12 B x}{5}+A \right ) b -\frac {8 B \,a^{4}}{5}\right )}{3 \left (b x +a \right )^{\frac {3}{2}} b^{5}}\) | \(75\) |
risch | \(-\frac {2 \left (-3 b^{2} B \,x^{2}-5 A \,b^{2} x +14 B a b x +40 a b A -73 a^{2} B \right ) \sqrt {b x +a}}{15 b^{5}}-\frac {2 a^{2} \left (9 A \,b^{2} x -12 B a b x +8 a b A -11 a^{2} B \right )}{3 b^{5} \left (b x +a \right )^{\frac {3}{2}}}\) | \(88\) |
gosper | \(-\frac {2 \left (-3 B \,x^{4} b^{4}-5 A \,x^{3} b^{4}+8 B \,x^{3} a \,b^{3}+30 A \,x^{2} a \,b^{3}-48 B \,x^{2} a^{2} b^{2}+120 A x \,a^{2} b^{2}-192 B x \,a^{3} b +80 A \,a^{3} b -128 B \,a^{4}\right )}{15 \left (b x +a \right )^{\frac {3}{2}} b^{5}}\) | \(95\) |
trager | \(-\frac {2 \left (-3 B \,x^{4} b^{4}-5 A \,x^{3} b^{4}+8 B \,x^{3} a \,b^{3}+30 A \,x^{2} a \,b^{3}-48 B \,x^{2} a^{2} b^{2}+120 A x \,a^{2} b^{2}-192 B x \,a^{3} b +80 A \,a^{3} b -128 B \,a^{4}\right )}{15 \left (b x +a \right )^{\frac {3}{2}} b^{5}}\) | \(95\) |
derivativedivides | \(\frac {\frac {2 B \left (b x +a \right )^{\frac {5}{2}}}{5}+\frac {2 A b \left (b x +a \right )^{\frac {3}{2}}}{3}-\frac {8 B a \left (b x +a \right )^{\frac {3}{2}}}{3}-6 A a b \sqrt {b x +a}+12 B \,a^{2} \sqrt {b x +a}-\frac {2 a^{2} \left (3 A b -4 B a \right )}{\sqrt {b x +a}}+\frac {2 a^{3} \left (A b -B a \right )}{3 \left (b x +a \right )^{\frac {3}{2}}}}{b^{5}}\) | \(105\) |
default | \(\frac {\frac {2 B \left (b x +a \right )^{\frac {5}{2}}}{5}+\frac {2 A b \left (b x +a \right )^{\frac {3}{2}}}{3}-\frac {8 B a \left (b x +a \right )^{\frac {3}{2}}}{3}-6 A a b \sqrt {b x +a}+12 B \,a^{2} \sqrt {b x +a}-\frac {2 a^{2} \left (3 A b -4 B a \right )}{\sqrt {b x +a}}+\frac {2 a^{3} \left (A b -B a \right )}{3 \left (b x +a \right )^{\frac {3}{2}}}}{b^{5}}\) | \(105\) |
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Time = 0.23 (sec) , antiderivative size = 117, normalized size of antiderivative = 0.99 \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\frac {2 \, {\left (3 \, B b^{4} x^{4} + 128 \, B a^{4} - 80 \, A a^{3} b - {\left (8 \, B a b^{3} - 5 \, A b^{4}\right )} x^{3} + 6 \, {\left (8 \, B a^{2} b^{2} - 5 \, A a b^{3}\right )} x^{2} + 24 \, {\left (8 \, B a^{3} b - 5 \, A a^{2} b^{2}\right )} x\right )} \sqrt {b x + a}}{15 \, {\left (b^{7} x^{2} + 2 \, a b^{6} x + a^{2} b^{5}\right )}} \]
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Time = 1.49 (sec) , antiderivative size = 133, normalized size of antiderivative = 1.13 \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\begin {cases} \frac {2 \left (\frac {B \left (a + b x\right )^{\frac {5}{2}}}{5 b} - \frac {a^{3} \left (- A b + B a\right )}{3 b \left (a + b x\right )^{\frac {3}{2}}} + \frac {a^{2} \left (- 3 A b + 4 B a\right )}{b \sqrt {a + b x}} + \frac {\left (a + b x\right )^{\frac {3}{2}} \left (A b - 4 B a\right )}{3 b} + \frac {\sqrt {a + b x} \left (- 3 A a b + 6 B a^{2}\right )}{b}\right )}{b^{4}} & \text {for}\: b \neq 0 \\\frac {\frac {A x^{4}}{4} + \frac {B x^{5}}{5}}{a^{\frac {5}{2}}} & \text {otherwise} \end {cases} \]
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Time = 0.19 (sec) , antiderivative size = 106, normalized size of antiderivative = 0.90 \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\frac {2 \, {\left (\frac {3 \, {\left (b x + a\right )}^{\frac {5}{2}} B - 5 \, {\left (4 \, B a - A b\right )} {\left (b x + a\right )}^{\frac {3}{2}} + 45 \, {\left (2 \, B a^{2} - A a b\right )} \sqrt {b x + a}}{b} - \frac {5 \, {\left (B a^{4} - A a^{3} b - 3 \, {\left (4 \, B a^{3} - 3 \, A a^{2} b\right )} {\left (b x + a\right )}\right )}}{{\left (b x + a\right )}^{\frac {3}{2}} b}\right )}}{15 \, b^{4}} \]
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Time = 0.28 (sec) , antiderivative size = 125, normalized size of antiderivative = 1.06 \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\frac {2 \, {\left (12 \, {\left (b x + a\right )} B a^{3} - B a^{4} - 9 \, {\left (b x + a\right )} A a^{2} b + A a^{3} b\right )}}{3 \, {\left (b x + a\right )}^{\frac {3}{2}} b^{5}} + \frac {2 \, {\left (3 \, {\left (b x + a\right )}^{\frac {5}{2}} B b^{20} - 20 \, {\left (b x + a\right )}^{\frac {3}{2}} B a b^{20} + 90 \, \sqrt {b x + a} B a^{2} b^{20} + 5 \, {\left (b x + a\right )}^{\frac {3}{2}} A b^{21} - 45 \, \sqrt {b x + a} A a b^{21}\right )}}{15 \, b^{25}} \]
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Time = 0.50 (sec) , antiderivative size = 103, normalized size of antiderivative = 0.87 \[ \int \frac {x^3 (A+B x)}{(a+b x)^{5/2}} \, dx=\frac {\left (12\,B\,a^2-6\,A\,a\,b\right )\,\sqrt {a+b\,x}}{b^5}+\frac {2\,B\,{\left (a+b\,x\right )}^{5/2}}{5\,b^5}+\frac {\left (8\,B\,a^3-6\,A\,a^2\,b\right )\,\left (a+b\,x\right )-\frac {2\,B\,a^4}{3}+\frac {2\,A\,a^3\,b}{3}}{b^5\,{\left (a+b\,x\right )}^{3/2}}+\frac {\left (2\,A\,b-8\,B\,a\right )\,{\left (a+b\,x\right )}^{3/2}}{3\,b^5} \]
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