Optimal. Leaf size=543 \[ -\frac{i \text{PolyLog}\left (2,-\frac{\sqrt{d} (-a-b x+i)}{b \sqrt{-c}-(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \text{PolyLog}\left (2,\frac{\sqrt{d} (-a-b x+i)}{b \sqrt{-c}+(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \text{PolyLog}\left (2,-\frac{\sqrt{d} (a+b x+i)}{b \sqrt{-c}-(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \text{PolyLog}\left (2,\frac{\sqrt{d} (a+b x+i)}{b \sqrt{-c}+(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \log (i a+i b x+1) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}-(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (-i a-i b x+1) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}+(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (i a+i b x+1) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}+(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \log (-i a-i b x+1) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}-(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}} \]
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Rubi [A] time = 0.607336, antiderivative size = 543, normalized size of antiderivative = 1., number of steps used = 17, number of rules used = 5, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.312, Rules used = {5051, 2409, 2394, 2393, 2391} \[ -\frac{i \text{PolyLog}\left (2,-\frac{\sqrt{d} (-a-b x+i)}{b \sqrt{-c}-(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \text{PolyLog}\left (2,\frac{\sqrt{d} (-a-b x+i)}{b \sqrt{-c}+(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \text{PolyLog}\left (2,-\frac{\sqrt{d} (a+b x+i)}{b \sqrt{-c}-(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \text{PolyLog}\left (2,\frac{\sqrt{d} (a+b x+i)}{b \sqrt{-c}+(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \log (i a+i b x+1) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}-(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (-i a-i b x+1) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}+(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (i a+i b x+1) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}+(-a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \log (-i a-i b x+1) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}-(a+i) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}} \]
Antiderivative was successfully verified.
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Rule 5051
Rule 2409
Rule 2394
Rule 2393
Rule 2391
Rubi steps
\begin{align*} \int \frac{\tan ^{-1}(a+b x)}{c+d x^2} \, dx &=\frac{1}{2} i \int \frac{\log (1-i a-i b x)}{c+d x^2} \, dx-\frac{1}{2} i \int \frac{\log (1+i a+i b x)}{c+d x^2} \, dx\\ &=\frac{1}{2} i \int \left (\frac{\sqrt{-c} \log (1-i a-i b x)}{2 c \left (\sqrt{-c}-\sqrt{d} x\right )}+\frac{\sqrt{-c} \log (1-i a-i b x)}{2 c \left (\sqrt{-c}+\sqrt{d} x\right )}\right ) \, dx-\frac{1}{2} i \int \left (\frac{\sqrt{-c} \log (1+i a+i b x)}{2 c \left (\sqrt{-c}-\sqrt{d} x\right )}+\frac{\sqrt{-c} \log (1+i a+i b x)}{2 c \left (\sqrt{-c}+\sqrt{d} x\right )}\right ) \, dx\\ &=-\frac{i \int \frac{\log (1-i a-i b x)}{\sqrt{-c}-\sqrt{d} x} \, dx}{4 \sqrt{-c}}-\frac{i \int \frac{\log (1-i a-i b x)}{\sqrt{-c}+\sqrt{d} x} \, dx}{4 \sqrt{-c}}+\frac{i \int \frac{\log (1+i a+i b x)}{\sqrt{-c}-\sqrt{d} x} \, dx}{4 \sqrt{-c}}+\frac{i \int \frac{\log (1+i a+i b x)}{\sqrt{-c}+\sqrt{d} x} \, dx}{4 \sqrt{-c}}\\ &=-\frac{i \log (1+i a+i b x) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}-(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (1-i a-i b x) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}+(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (1+i a+i b x) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}+(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \log (1-i a-i b x) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}-(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{b \int \frac{\log \left (-\frac{i b \left (\sqrt{-c}-\sqrt{d} x\right )}{-i b \sqrt{-c}+(1-i a) \sqrt{d}}\right )}{1-i a-i b x} \, dx}{4 \sqrt{-c} \sqrt{d}}-\frac{b \int \frac{\log \left (\frac{i b \left (\sqrt{-c}-\sqrt{d} x\right )}{i b \sqrt{-c}+(1+i a) \sqrt{d}}\right )}{1+i a+i b x} \, dx}{4 \sqrt{-c} \sqrt{d}}+\frac{b \int \frac{\log \left (-\frac{i b \left (\sqrt{-c}+\sqrt{d} x\right )}{-i b \sqrt{-c}-(1-i a) \sqrt{d}}\right )}{1-i a-i b x} \, dx}{4 \sqrt{-c} \sqrt{d}}+\frac{b \int \frac{\log \left (\frac{i b \left (\sqrt{-c}+\sqrt{d} x\right )}{i b \sqrt{-c}-(1+i a) \sqrt{d}}\right )}{1+i a+i b x} \, dx}{4 \sqrt{-c} \sqrt{d}}\\ &=-\frac{i \log (1+i a+i b x) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}-(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (1-i a-i b x) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}+(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (1+i a+i b x) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}+(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \log (1-i a-i b x) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}-(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \operatorname{Subst}\left (\int \frac{\log \left (1+\frac{\sqrt{d} x}{-i b \sqrt{-c}-(1-i a) \sqrt{d}}\right )}{x} \, dx,x,1-i a-i b x\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \operatorname{Subst}\left (\int \frac{\log \left (1-\frac{\sqrt{d} x}{-i b \sqrt{-c}+(1-i a) \sqrt{d}}\right )}{x} \, dx,x,1-i a-i b x\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \operatorname{Subst}\left (\int \frac{\log \left (1+\frac{\sqrt{d} x}{i b \sqrt{-c}-(1+i a) \sqrt{d}}\right )}{x} \, dx,x,1+i a+i b x\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \operatorname{Subst}\left (\int \frac{\log \left (1-\frac{\sqrt{d} x}{i b \sqrt{-c}+(1+i a) \sqrt{d}}\right )}{x} \, dx,x,1+i a+i b x\right )}{4 \sqrt{-c} \sqrt{d}}\\ &=-\frac{i \log (1+i a+i b x) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}-(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (1-i a-i b x) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}+(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \log (1+i a+i b x) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}+(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \log (1-i a-i b x) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}-(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \text{Li}_2\left (-\frac{\sqrt{d} (i-a-b x)}{b \sqrt{-c}-(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \text{Li}_2\left (\frac{\sqrt{d} (i-a-b x)}{b \sqrt{-c}+(i-a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}-\frac{i \text{Li}_2\left (-\frac{\sqrt{d} (i+a+b x)}{b \sqrt{-c}-(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}+\frac{i \text{Li}_2\left (\frac{\sqrt{d} (i+a+b x)}{b \sqrt{-c}+(i+a) \sqrt{d}}\right )}{4 \sqrt{-c} \sqrt{d}}\\ \end{align*}
Mathematica [A] time = 0.329175, size = 409, normalized size = 0.75 \[ -\frac{i \left (-\text{PolyLog}\left (2,\frac{\sqrt{d} (a+b x-i)}{-b \sqrt{-c}+(a-i) \sqrt{d}}\right )+\text{PolyLog}\left (2,\frac{\sqrt{d} (a+b x-i)}{b \sqrt{-c}+(a-i) \sqrt{d}}\right )+\text{PolyLog}\left (2,\frac{\sqrt{d} (a+b x+i)}{-b \sqrt{-c}+(a+i) \sqrt{d}}\right )-\text{PolyLog}\left (2,\frac{\sqrt{d} (a+b x+i)}{b \sqrt{-c}+(a+i) \sqrt{d}}\right )+\log (i a+i b x+1) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}+(a-i) \sqrt{d}}\right )-\log (-i (a+b x+i)) \log \left (\frac{b \left (\sqrt{-c}-\sqrt{d} x\right )}{b \sqrt{-c}+(a+i) \sqrt{d}}\right )-\log (i a+i b x+1) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}-(a-i) \sqrt{d}}\right )+\log (-i (a+b x+i)) \log \left (\frac{b \left (\sqrt{-c}+\sqrt{d} x\right )}{b \sqrt{-c}-(a+i) \sqrt{d}}\right )\right )}{4 \sqrt{-c} \sqrt{d}} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.713, size = 2192, normalized size = 4. \begin{align*} \text{result too large to display} \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 [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{\arctan \left (b x + a\right )}{d x^{2} + c}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\arctan \left (b x + a\right )}{d x^{2} + c}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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