Optimal. Leaf size=95 \[ -\frac {15 b^2}{4 a^3 \sqrt {-a+b x}}+\frac {1}{2 a x^2 \sqrt {-a+b x}}+\frac {5 b}{4 a^2 x \sqrt {-a+b x}}-\frac {15 b^2 \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{4 a^{7/2}} \]
[Out]
________________________________________________________________________________________
Rubi [A]
time = 0.02, antiderivative size = 95, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 4, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {44, 53, 65, 211}
\begin {gather*} -\frac {15 b^2 \text {ArcTan}\left (\frac {\sqrt {b x-a}}{\sqrt {a}}\right )}{4 a^{7/2}}-\frac {15 b^2}{4 a^3 \sqrt {b x-a}}+\frac {5 b}{4 a^2 x \sqrt {b x-a}}+\frac {1}{2 a x^2 \sqrt {b x-a}} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
Rule 44
Rule 53
Rule 65
Rule 211
Rubi steps
\begin {align*} \int \frac {1}{x^3 (-a+b x)^{3/2}} \, dx &=-\frac {2}{a x^2 \sqrt {-a+b x}}-\frac {5 \int \frac {1}{x^3 \sqrt {-a+b x}} \, dx}{a}\\ &=-\frac {2}{a x^2 \sqrt {-a+b x}}-\frac {5 \sqrt {-a+b x}}{2 a^2 x^2}-\frac {(15 b) \int \frac {1}{x^2 \sqrt {-a+b x}} \, dx}{4 a^2}\\ &=-\frac {2}{a x^2 \sqrt {-a+b x}}-\frac {5 \sqrt {-a+b x}}{2 a^2 x^2}-\frac {15 b \sqrt {-a+b x}}{4 a^3 x}-\frac {\left (15 b^2\right ) \int \frac {1}{x \sqrt {-a+b x}} \, dx}{8 a^3}\\ &=-\frac {2}{a x^2 \sqrt {-a+b x}}-\frac {5 \sqrt {-a+b x}}{2 a^2 x^2}-\frac {15 b \sqrt {-a+b x}}{4 a^3 x}-\frac {(15 b) \text {Subst}\left (\int \frac {1}{\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {-a+b x}\right )}{4 a^3}\\ &=-\frac {2}{a x^2 \sqrt {-a+b x}}-\frac {5 \sqrt {-a+b x}}{2 a^2 x^2}-\frac {15 b \sqrt {-a+b x}}{4 a^3 x}-\frac {15 b^2 \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{4 a^{7/2}}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A]
time = 0.10, size = 71, normalized size = 0.75 \begin {gather*} \frac {2 a^2+5 a b x-15 b^2 x^2}{4 a^3 x^2 \sqrt {-a+b x}}-\frac {15 b^2 \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{4 a^{7/2}} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A]
time = 0.10, size = 77, normalized size = 0.81
method | result | size |
risch | \(\frac {\left (-b x +a \right ) \left (7 b x +2 a \right )}{4 a^{3} x^{2} \sqrt {b x -a}}-\frac {2 b^{2}}{a^{3} \sqrt {b x -a}}-\frac {15 b^{2} \arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{4 a^{\frac {7}{2}}}\) | \(72\) |
derivativedivides | \(2 b^{2} \left (-\frac {\frac {\frac {7 \left (b x -a \right )^{\frac {3}{2}}}{8}+\frac {9 a \sqrt {b x -a}}{8}}{b^{2} x^{2}}+\frac {15 \arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{8 \sqrt {a}}}{a^{3}}-\frac {1}{a^{3} \sqrt {b x -a}}\right )\) | \(77\) |
default | \(2 b^{2} \left (-\frac {\frac {\frac {7 \left (b x -a \right )^{\frac {3}{2}}}{8}+\frac {9 a \sqrt {b x -a}}{8}}{b^{2} x^{2}}+\frac {15 \arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{8 \sqrt {a}}}{a^{3}}-\frac {1}{a^{3} \sqrt {b x -a}}\right )\) | \(77\) |
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [A]
time = 0.48, size = 104, normalized size = 1.09 \begin {gather*} -\frac {15 \, {\left (b x - a\right )}^{2} b^{2} + 25 \, {\left (b x - a\right )} a b^{2} + 8 \, a^{2} b^{2}}{4 \, {\left ({\left (b x - a\right )}^{\frac {5}{2}} a^{3} + 2 \, {\left (b x - a\right )}^{\frac {3}{2}} a^{4} + \sqrt {b x - a} a^{5}\right )}} - \frac {15 \, b^{2} \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right )}{4 \, a^{\frac {7}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A]
time = 1.03, size = 198, normalized size = 2.08 \begin {gather*} \left [-\frac {15 \, {\left (b^{3} x^{3} - a b^{2} x^{2}\right )} \sqrt {-a} \log \left (\frac {b x + 2 \, \sqrt {b x - a} \sqrt {-a} - 2 \, a}{x}\right ) + 2 \, {\left (15 \, a b^{2} x^{2} - 5 \, a^{2} b x - 2 \, a^{3}\right )} \sqrt {b x - a}}{8 \, {\left (a^{4} b x^{3} - a^{5} x^{2}\right )}}, -\frac {15 \, {\left (b^{3} x^{3} - a b^{2} x^{2}\right )} \sqrt {a} \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right ) + {\left (15 \, a b^{2} x^{2} - 5 \, a^{2} b x - 2 \, a^{3}\right )} \sqrt {b x - a}}{4 \, {\left (a^{4} b x^{3} - a^{5} x^{2}\right )}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [C] Result contains complex when optimal does not.
time = 3.98, size = 226, normalized size = 2.38 \begin {gather*} \begin {cases} - \frac {i}{2 a \sqrt {b} x^{\frac {5}{2}} \sqrt {\frac {a}{b x} - 1}} - \frac {5 i \sqrt {b}}{4 a^{2} x^{\frac {3}{2}} \sqrt {\frac {a}{b x} - 1}} + \frac {15 i b^{\frac {3}{2}}}{4 a^{3} \sqrt {x} \sqrt {\frac {a}{b x} - 1}} - \frac {15 i b^{2} \operatorname {acosh}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{4 a^{\frac {7}{2}}} & \text {for}\: \left |{\frac {a}{b x}}\right | > 1 \\\frac {1}{2 a \sqrt {b} x^{\frac {5}{2}} \sqrt {- \frac {a}{b x} + 1}} + \frac {5 \sqrt {b}}{4 a^{2} x^{\frac {3}{2}} \sqrt {- \frac {a}{b x} + 1}} - \frac {15 b^{\frac {3}{2}}}{4 a^{3} \sqrt {x} \sqrt {- \frac {a}{b x} + 1}} + \frac {15 b^{2} \operatorname {asin}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{4 a^{\frac {7}{2}}} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A]
time = 1.51, size = 81, normalized size = 0.85 \begin {gather*} -\frac {15 \, b^{2} \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right )}{4 \, a^{\frac {7}{2}}} - \frac {2 \, b^{2}}{\sqrt {b x - a} a^{3}} - \frac {7 \, {\left (b x - a\right )}^{\frac {3}{2}} b^{2} + 9 \, \sqrt {b x - a} a b^{2}}{4 \, a^{3} b^{2} x^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Mupad [B]
time = 0.13, size = 101, normalized size = 1.06 \begin {gather*} -\frac {\frac {2\,b^2}{a}+\frac {15\,b^2\,{\left (a-b\,x\right )}^2}{4\,a^3}-\frac {25\,b^2\,\left (a-b\,x\right )}{4\,a^2}}{2\,a\,{\left (b\,x-a\right )}^{3/2}+{\left (b\,x-a\right )}^{5/2}+a^2\,\sqrt {b\,x-a}}-\frac {15\,b^2\,\mathrm {atan}\left (\frac {\sqrt {b\,x-a}}{\sqrt {a}}\right )}{4\,a^{7/2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________