Optimal. Leaf size=52 \[ -\frac {a \text {ArcTan}\left (\frac {\sqrt {b} \tan (e+f x)}{\sqrt {a+b}}\right )}{b^{3/2} \sqrt {a+b} f}+\frac {\tan (e+f x)}{b f} \]
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Rubi [A]
time = 0.05, antiderivative size = 52, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 23, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.130, Rules used = {4231, 396, 211}
\begin {gather*} \frac {\tan (e+f x)}{b f}-\frac {a \text {ArcTan}\left (\frac {\sqrt {b} \tan (e+f x)}{\sqrt {a+b}}\right )}{b^{3/2} f \sqrt {a+b}} \end {gather*}
Antiderivative was successfully verified.
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Rule 211
Rule 396
Rule 4231
Rubi steps
\begin {align*} \int \frac {\sec ^4(e+f x)}{a+b \sec ^2(e+f x)} \, dx &=\frac {\text {Subst}\left (\int \frac {1+x^2}{a+b+b x^2} \, dx,x,\tan (e+f x)\right )}{f}\\ &=\frac {\tan (e+f x)}{b f}-\frac {a \text {Subst}\left (\int \frac {1}{a+b+b x^2} \, dx,x,\tan (e+f x)\right )}{b f}\\ &=-\frac {a \tan ^{-1}\left (\frac {\sqrt {b} \tan (e+f x)}{\sqrt {a+b}}\right )}{b^{3/2} \sqrt {a+b} f}+\frac {\tan (e+f x)}{b f}\\ \end {align*}
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Mathematica [C] Result contains complex when optimal does not.
time = 0.85, size = 192, normalized size = 3.69 \begin {gather*} \frac {(a+2 b+a \cos (2 (e+f x))) \sec ^2(e+f x) \left (a \text {ArcTan}\left (\frac {\sec (f x) (\cos (2 e)-i \sin (2 e)) (-((a+2 b) \sin (f x))+a \sin (2 e+f x))}{2 \sqrt {a+b} \sqrt {b (\cos (e)-i \sin (e))^4}}\right ) (\cos (2 e)-i \sin (2 e))+\sqrt {a+b} \sec (e) \sec (e+f x) \sqrt {b (i \cos (e)+\sin (e))^4} \sin (f x)\right )}{2 b \sqrt {a+b} f \left (a+b \sec ^2(e+f x)\right ) \sqrt {b (\cos (e)-i \sin (e))^4}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.13, size = 45, normalized size = 0.87
method | result | size |
derivativedivides | \(\frac {\frac {\tan \left (f x +e \right )}{b}-\frac {a \arctan \left (\frac {b \tan \left (f x +e \right )}{\sqrt {\left (a +b \right ) b}}\right )}{b \sqrt {\left (a +b \right ) b}}}{f}\) | \(45\) |
default | \(\frac {\frac {\tan \left (f x +e \right )}{b}-\frac {a \arctan \left (\frac {b \tan \left (f x +e \right )}{\sqrt {\left (a +b \right ) b}}\right )}{b \sqrt {\left (a +b \right ) b}}}{f}\) | \(45\) |
risch | \(\frac {2 i}{f b \left ({\mathrm e}^{2 i \left (f x +e \right )}+1\right )}-\frac {a \ln \left ({\mathrm e}^{2 i \left (f x +e \right )}-\frac {2 i b a +2 i b^{2}-a \sqrt {-a b -b^{2}}-2 b \sqrt {-a b -b^{2}}}{a \sqrt {-a b -b^{2}}}\right )}{2 \sqrt {-a b -b^{2}}\, f b}+\frac {a \ln \left ({\mathrm e}^{2 i \left (f x +e \right )}+\frac {2 i b a +2 i b^{2}+a \sqrt {-a b -b^{2}}+2 b \sqrt {-a b -b^{2}}}{a \sqrt {-a b -b^{2}}}\right )}{2 \sqrt {-a b -b^{2}}\, f b}\) | \(204\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.48, size = 47, normalized size = 0.90 \begin {gather*} -\frac {\frac {a \arctan \left (\frac {b \tan \left (f x + e\right )}{\sqrt {{\left (a + b\right )} b}}\right )}{\sqrt {{\left (a + b\right )} b} b} - \frac {\tan \left (f x + e\right )}{b}}{f} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 109 vs.
\(2 (46) = 92\).
time = 3.42, size = 302, normalized size = 5.81 \begin {gather*} \left [-\frac {\sqrt {-a b - b^{2}} a \cos \left (f x + e\right ) \log \left (\frac {{\left (a^{2} + 8 \, a b + 8 \, b^{2}\right )} \cos \left (f x + e\right )^{4} - 2 \, {\left (3 \, a b + 4 \, b^{2}\right )} \cos \left (f x + e\right )^{2} - 4 \, {\left ({\left (a + 2 \, b\right )} \cos \left (f x + e\right )^{3} - b \cos \left (f x + e\right )\right )} \sqrt {-a b - b^{2}} \sin \left (f x + e\right ) + b^{2}}{a^{2} \cos \left (f x + e\right )^{4} + 2 \, a b \cos \left (f x + e\right )^{2} + b^{2}}\right ) - 4 \, {\left (a b + b^{2}\right )} \sin \left (f x + e\right )}{4 \, {\left (a b^{2} + b^{3}\right )} f \cos \left (f x + e\right )}, \frac {\sqrt {a b + b^{2}} a \arctan \left (\frac {{\left (a + 2 \, b\right )} \cos \left (f x + e\right )^{2} - b}{2 \, \sqrt {a b + b^{2}} \cos \left (f x + e\right ) \sin \left (f x + e\right )}\right ) \cos \left (f x + e\right ) + 2 \, {\left (a b + b^{2}\right )} \sin \left (f x + e\right )}{2 \, {\left (a b^{2} + b^{3}\right )} f \cos \left (f x + e\right )}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {\sec ^{4}{\left (e + f x \right )}}{a + b \sec ^{2}{\left (e + f x \right )}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.44, size = 66, normalized size = 1.27 \begin {gather*} -\frac {\frac {{\left (\pi \left \lfloor \frac {f x + e}{\pi } + \frac {1}{2} \right \rfloor \mathrm {sgn}\left (b\right ) + \arctan \left (\frac {b \tan \left (f x + e\right )}{\sqrt {a b + b^{2}}}\right )\right )} a}{\sqrt {a b + b^{2}} b} - \frac {\tan \left (f x + e\right )}{b}}{f} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 4.42, size = 44, normalized size = 0.85 \begin {gather*} \frac {\mathrm {tan}\left (e+f\,x\right )}{b\,f}-\frac {a\,\mathrm {atan}\left (\frac {\sqrt {b}\,\mathrm {tan}\left (e+f\,x\right )}{\sqrt {a+b}}\right )}{b^{3/2}\,f\,\sqrt {a+b}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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