Optimal. Leaf size=72 \[ \frac{(b c-a d) \tanh ^{-1}\left (\frac{\sqrt{d} \sqrt{a+b x}}{\sqrt{b} \sqrt{c+d x}}\right )}{b^{3/2} \sqrt{d}}+\frac{\sqrt{a+b x} \sqrt{c+d x}}{b} \]
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Rubi [A] time = 0.0376084, antiderivative size = 72, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 19, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.21, Rules used = {50, 63, 217, 206} \[ \frac{(b c-a d) \tanh ^{-1}\left (\frac{\sqrt{d} \sqrt{a+b x}}{\sqrt{b} \sqrt{c+d x}}\right )}{b^{3/2} \sqrt{d}}+\frac{\sqrt{a+b x} \sqrt{c+d x}}{b} \]
Antiderivative was successfully verified.
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Rule 50
Rule 63
Rule 217
Rule 206
Rubi steps
\begin{align*} \int \frac{\sqrt{c+d x}}{\sqrt{a+b x}} \, dx &=\frac{\sqrt{a+b x} \sqrt{c+d x}}{b}+\frac{(b c-a d) \int \frac{1}{\sqrt{a+b x} \sqrt{c+d x}} \, dx}{2 b}\\ &=\frac{\sqrt{a+b x} \sqrt{c+d x}}{b}+\frac{(b c-a d) \operatorname{Subst}\left (\int \frac{1}{\sqrt{c-\frac{a d}{b}+\frac{d x^2}{b}}} \, dx,x,\sqrt{a+b x}\right )}{b^2}\\ &=\frac{\sqrt{a+b x} \sqrt{c+d x}}{b}+\frac{(b c-a d) \operatorname{Subst}\left (\int \frac{1}{1-\frac{d x^2}{b}} \, dx,x,\frac{\sqrt{a+b x}}{\sqrt{c+d x}}\right )}{b^2}\\ &=\frac{\sqrt{a+b x} \sqrt{c+d x}}{b}+\frac{(b c-a d) \tanh ^{-1}\left (\frac{\sqrt{d} \sqrt{a+b x}}{\sqrt{b} \sqrt{c+d x}}\right )}{b^{3/2} \sqrt{d}}\\ \end{align*}
Mathematica [A] time = 0.101402, size = 117, normalized size = 1.62 \[ \frac{\sqrt{c+d x} \left (\sqrt{d} \sqrt{a+b x} \sqrt{\frac{b (c+d x)}{b c-a d}}+\sqrt{b c-a d} \sinh ^{-1}\left (\frac{\sqrt{d} \sqrt{a+b x}}{\sqrt{b c-a d}}\right )\right )}{b \sqrt{d} \sqrt{\frac{b (c+d x)}{b c-a d}}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.003, size = 107, normalized size = 1.5 \begin{align*}{\frac{1}{b}\sqrt{bx+a}\sqrt{dx+c}}-{\frac{ad-bc}{2\,b}\sqrt{ \left ( bx+a \right ) \left ( dx+c \right ) }\ln \left ({ \left ({\frac{ad}{2}}+{\frac{bc}{2}}+bdx \right ){\frac{1}{\sqrt{bd}}}}+\sqrt{d{x}^{2}b+ \left ( ad+bc \right ) x+ac} \right ){\frac{1}{\sqrt{bx+a}}}{\frac{1}{\sqrt{dx+c}}}{\frac{1}{\sqrt{bd}}}} \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 = 2.16635, size = 558, normalized size = 7.75 \begin{align*} \left [\frac{4 \, \sqrt{b x + a} \sqrt{d x + c} b d -{\left (b c - a d\right )} \sqrt{b d} \log \left (8 \, b^{2} d^{2} x^{2} + b^{2} c^{2} + 6 \, a b c d + a^{2} d^{2} - 4 \,{\left (2 \, b d x + b c + a d\right )} \sqrt{b d} \sqrt{b x + a} \sqrt{d x + c} + 8 \,{\left (b^{2} c d + a b d^{2}\right )} x\right )}{4 \, b^{2} d}, \frac{2 \, \sqrt{b x + a} \sqrt{d x + c} b d -{\left (b c - a d\right )} \sqrt{-b d} \arctan \left (\frac{{\left (2 \, b d x + b c + a d\right )} \sqrt{-b d} \sqrt{b x + a} \sqrt{d x + c}}{2 \,{\left (b^{2} d^{2} x^{2} + a b c d +{\left (b^{2} c d + a b d^{2}\right )} x\right )}}\right )}{2 \, b^{2} d}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\sqrt{c + d x}}{\sqrt{a + b x}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 2.78602, size = 126, normalized size = 1.75 \begin{align*} -\frac{{\left (\frac{{\left (b^{2} c - a b d\right )} \log \left ({\left | -\sqrt{b d} \sqrt{b x + a} + \sqrt{b^{2} c +{\left (b x + a\right )} b d - a b d} \right |}\right )}{\sqrt{b d}} - \sqrt{b^{2} c +{\left (b x + a\right )} b d - a b d} \sqrt{b x + a}\right )}{\left | b \right |}}{b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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