Optimal. Leaf size=50 \[ \frac {\log (\cos (e+f x))}{(a-b) f}+\frac {a \log \left (a+b \tan ^2(e+f x)\right )}{2 (a-b) b f} \]
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Rubi [A]
time = 0.06, antiderivative size = 50, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 3, integrand size = 23, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.130, Rules used = {3751, 457, 78}
\begin {gather*} \frac {a \log \left (a+b \tan ^2(e+f x)\right )}{2 b f (a-b)}+\frac {\log (\cos (e+f x))}{f (a-b)} \end {gather*}
Antiderivative was successfully verified.
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Rule 78
Rule 457
Rule 3751
Rubi steps
\begin {align*} \int \frac {\tan ^3(e+f x)}{a+b \tan ^2(e+f x)} \, dx &=\frac {\text {Subst}\left (\int \frac {x^3}{\left (1+x^2\right ) \left (a+b x^2\right )} \, dx,x,\tan (e+f x)\right )}{f}\\ &=\frac {\text {Subst}\left (\int \frac {x}{(1+x) (a+b x)} \, dx,x,\tan ^2(e+f x)\right )}{2 f}\\ &=\frac {\text {Subst}\left (\int \left (-\frac {1}{(a-b) (1+x)}+\frac {a}{(a-b) (a+b x)}\right ) \, dx,x,\tan ^2(e+f x)\right )}{2 f}\\ &=\frac {\log (\cos (e+f x))}{(a-b) f}+\frac {a \log \left (a+b \tan ^2(e+f x)\right )}{2 (a-b) b f}\\ \end {align*}
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Mathematica [A]
time = 0.02, size = 41, normalized size = 0.82 \begin {gather*} \frac {2 b \log (\cos (e+f x))+a \log \left (a+b \tan ^2(e+f x)\right )}{2 a b f-2 b^2 f} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.09, size = 52, normalized size = 1.04
method | result | size |
derivativedivides | \(\frac {-\frac {\ln \left (1+\tan ^{2}\left (f x +e \right )\right )}{2 \left (a -b \right )}+\frac {a \ln \left (a +b \left (\tan ^{2}\left (f x +e \right )\right )\right )}{2 \left (a -b \right ) b}}{f}\) | \(52\) |
default | \(\frac {-\frac {\ln \left (1+\tan ^{2}\left (f x +e \right )\right )}{2 \left (a -b \right )}+\frac {a \ln \left (a +b \left (\tan ^{2}\left (f x +e \right )\right )\right )}{2 \left (a -b \right ) b}}{f}\) | \(52\) |
norman | \(-\frac {\ln \left (1+\tan ^{2}\left (f x +e \right )\right )}{2 f \left (a -b \right )}+\frac {a \ln \left (a +b \left (\tan ^{2}\left (f x +e \right )\right )\right )}{2 \left (a -b \right ) b f}\) | \(54\) |
risch | \(\frac {i x}{a -b}+\frac {2 i x}{b}+\frac {2 i e}{b f}-\frac {2 i a x}{b \left (a -b \right )}-\frac {2 i a e}{f b \left (a -b \right )}-\frac {\ln \left ({\mathrm e}^{2 i \left (f x +e \right )}+1\right )}{b f}+\frac {a \ln \left ({\mathrm e}^{4 i \left (f x +e \right )}+\frac {2 \left (a +b \right ) {\mathrm e}^{2 i \left (f x +e \right )}}{a -b}+1\right )}{2 f b \left (a -b \right )}\) | \(132\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.27, size = 55, normalized size = 1.10 \begin {gather*} \frac {\frac {a \log \left (-{\left (a - b\right )} \sin \left (f x + e\right )^{2} + a\right )}{a b - b^{2}} - \frac {\log \left (\sin \left (f x + e\right )^{2} - 1\right )}{b}}{2 \, f} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 2.34, size = 68, normalized size = 1.36 \begin {gather*} \frac {a \log \left (\frac {b \tan \left (f x + e\right )^{2} + a}{\tan \left (f x + e\right )^{2} + 1}\right ) - {\left (a - b\right )} \log \left (\frac {1}{\tan \left (f x + e\right )^{2} + 1}\right )}{2 \, {\left (a b - b^{2}\right )} f} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 230 vs.
\(2 (36) = 72\).
time = 1.93, size = 230, normalized size = 4.60 \begin {gather*} \begin {cases} \tilde {\infty } x \tan {\left (e \right )} & \text {for}\: a = 0 \wedge b = 0 \wedge f = 0 \\\frac {- \frac {\log {\left (\tan ^{2}{\left (e + f x \right )} + 1 \right )}}{2 f} + \frac {\tan ^{2}{\left (e + f x \right )}}{2 f}}{a} & \text {for}\: b = 0 \\\frac {\log {\left (\tan ^{2}{\left (e + f x \right )} + 1 \right )} \tan ^{2}{\left (e + f x \right )}}{2 b f \tan ^{2}{\left (e + f x \right )} + 2 b f} + \frac {\log {\left (\tan ^{2}{\left (e + f x \right )} + 1 \right )}}{2 b f \tan ^{2}{\left (e + f x \right )} + 2 b f} + \frac {1}{2 b f \tan ^{2}{\left (e + f x \right )} + 2 b f} & \text {for}\: a = b \\\frac {x \tan ^{3}{\left (e \right )}}{a + b \tan ^{2}{\left (e \right )}} & \text {for}\: f = 0 \\\frac {a \log {\left (- \sqrt {- \frac {a}{b}} + \tan {\left (e + f x \right )} \right )}}{2 a b f - 2 b^{2} f} + \frac {a \log {\left (\sqrt {- \frac {a}{b}} + \tan {\left (e + f x \right )} \right )}}{2 a b f - 2 b^{2} f} - \frac {b \log {\left (\tan ^{2}{\left (e + f x \right )} + 1 \right )}}{2 a b f - 2 b^{2} f} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 189 vs.
\(2 (50) = 100\).
time = 0.84, size = 189, normalized size = 3.78 \begin {gather*} \frac {\frac {a^{2} \log \left ({\left | -a {\left (\frac {\cos \left (f x + e\right ) + 1}{\cos \left (f x + e\right ) - 1} + \frac {\cos \left (f x + e\right ) - 1}{\cos \left (f x + e\right ) + 1}\right )} - 2 \, a + 4 \, b \right |}\right )}{a^{2} b - a b^{2}} - \frac {\log \left ({\left | -\frac {\cos \left (f x + e\right ) + 1}{\cos \left (f x + e\right ) - 1} - \frac {\cos \left (f x + e\right ) - 1}{\cos \left (f x + e\right ) + 1} + 2 \right |}\right )}{a - b} - \frac {\log \left ({\left | -\frac {\cos \left (f x + e\right ) + 1}{\cos \left (f x + e\right ) - 1} - \frac {\cos \left (f x + e\right ) - 1}{\cos \left (f x + e\right ) + 1} - 2 \right |}\right )}{b}}{2 \, f} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 11.78, size = 54, normalized size = 1.08 \begin {gather*} \frac {a\,\ln \left (b\,{\mathrm {tan}\left (e+f\,x\right )}^2+a\right )}{2\,f\,\left (a\,b-b^2\right )}-\frac {\ln \left ({\mathrm {tan}\left (e+f\,x\right )}^2+1\right )}{2\,f\,\left (a-b\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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