Optimal. Leaf size=72 \[ -\frac{3 \sqrt{x}}{4 a^2 (a-b x)}-\frac{3 \tanh ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a}}\right )}{4 a^{5/2} \sqrt{b}}-\frac{\sqrt{x}}{2 a (a-b x)^2} \]
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Rubi [A] time = 0.0196717, antiderivative size = 72, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.2, Rules used = {51, 63, 208} \[ -\frac{3 \sqrt{x}}{4 a^2 (a-b x)}-\frac{3 \tanh ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a}}\right )}{4 a^{5/2} \sqrt{b}}-\frac{\sqrt{x}}{2 a (a-b x)^2} \]
Antiderivative was successfully verified.
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Rule 51
Rule 63
Rule 208
Rubi steps
\begin{align*} \int \frac{1}{\sqrt{x} (-a+b x)^3} \, dx &=-\frac{\sqrt{x}}{2 a (a-b x)^2}-\frac{3 \int \frac{1}{\sqrt{x} (-a+b x)^2} \, dx}{4 a}\\ &=-\frac{\sqrt{x}}{2 a (a-b x)^2}-\frac{3 \sqrt{x}}{4 a^2 (a-b x)}+\frac{3 \int \frac{1}{\sqrt{x} (-a+b x)} \, dx}{8 a^2}\\ &=-\frac{\sqrt{x}}{2 a (a-b x)^2}-\frac{3 \sqrt{x}}{4 a^2 (a-b x)}+\frac{3 \operatorname{Subst}\left (\int \frac{1}{-a+b x^2} \, dx,x,\sqrt{x}\right )}{4 a^2}\\ &=-\frac{\sqrt{x}}{2 a (a-b x)^2}-\frac{3 \sqrt{x}}{4 a^2 (a-b x)}-\frac{3 \tanh ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a}}\right )}{4 a^{5/2} \sqrt{b}}\\ \end{align*}
Mathematica [C] time = 0.0049799, size = 24, normalized size = 0.33 \[ -\frac{2 \sqrt{x} \, _2F_1\left (\frac{1}{2},3;\frac{3}{2};\frac{b x}{a}\right )}{a^3} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.007, size = 63, normalized size = 0.9 \begin{align*} -{\frac{1}{2\,a \left ( bx-a \right ) ^{2}}\sqrt{x}}-{\frac{3}{2\,a} \left ( -{\frac{1}{2\,a \left ( bx-a \right ) }\sqrt{x}}+{\frac{1}{2\,a}{\it Artanh} \left ({b\sqrt{x}{\frac{1}{\sqrt{ab}}}} \right ){\frac{1}{\sqrt{ab}}}} \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.66265, size = 420, normalized size = 5.83 \begin{align*} \left [\frac{3 \,{\left (b^{2} x^{2} - 2 \, a b x + a^{2}\right )} \sqrt{a b} \log \left (\frac{b x + a - 2 \, \sqrt{a b} \sqrt{x}}{b x - a}\right ) + 2 \,{\left (3 \, a b^{2} x - 5 \, a^{2} b\right )} \sqrt{x}}{8 \,{\left (a^{3} b^{3} x^{2} - 2 \, a^{4} b^{2} x + a^{5} b\right )}}, \frac{3 \,{\left (b^{2} x^{2} - 2 \, a b x + a^{2}\right )} \sqrt{-a b} \arctan \left (\frac{\sqrt{-a b}}{b \sqrt{x}}\right ) +{\left (3 \, a b^{2} x - 5 \, a^{2} b\right )} \sqrt{x}}{4 \,{\left (a^{3} b^{3} x^{2} - 2 \, a^{4} b^{2} x + a^{5} b\right )}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 56.5358, size = 660, normalized size = 9.17 \begin{align*} \begin{cases} \frac{\tilde{\infty }}{x^{\frac{5}{2}}} & \text{for}\: a = 0 \wedge b = 0 \\- \frac{2}{5 b^{3} x^{\frac{5}{2}}} & \text{for}\: a = 0 \\- \frac{2 \sqrt{x}}{a^{3}} & \text{for}\: b = 0 \\- \frac{10 a^{\frac{3}{2}} b \sqrt{x} \sqrt{\frac{1}{b}}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} + \frac{6 \sqrt{a} b^{2} x^{\frac{3}{2}} \sqrt{\frac{1}{b}}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} + \frac{3 a^{2} \log{\left (- \sqrt{a} \sqrt{\frac{1}{b}} + \sqrt{x} \right )}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} - \frac{3 a^{2} \log{\left (\sqrt{a} \sqrt{\frac{1}{b}} + \sqrt{x} \right )}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} - \frac{6 a b x \log{\left (- \sqrt{a} \sqrt{\frac{1}{b}} + \sqrt{x} \right )}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} + \frac{6 a b x \log{\left (\sqrt{a} \sqrt{\frac{1}{b}} + \sqrt{x} \right )}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} + \frac{3 b^{2} x^{2} \log{\left (- \sqrt{a} \sqrt{\frac{1}{b}} + \sqrt{x} \right )}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} - \frac{3 b^{2} x^{2} \log{\left (\sqrt{a} \sqrt{\frac{1}{b}} + \sqrt{x} \right )}}{8 a^{\frac{9}{2}} b \sqrt{\frac{1}{b}} - 16 a^{\frac{7}{2}} b^{2} x \sqrt{\frac{1}{b}} + 8 a^{\frac{5}{2}} b^{3} x^{2} \sqrt{\frac{1}{b}}} & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.21071, size = 69, normalized size = 0.96 \begin{align*} \frac{3 \, \arctan \left (\frac{b \sqrt{x}}{\sqrt{-a b}}\right )}{4 \, \sqrt{-a b} a^{2}} + \frac{3 \, b x^{\frac{3}{2}} - 5 \, a \sqrt{x}}{4 \,{\left (b x - a\right )}^{2} a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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