Optimal. Leaf size=154 \[ -\frac {(a+b x) \sqrt {1-\frac {1}{(a+b x)^2}} \sec ^{-1}(a+b x)}{b^2}-\frac {a^2 \sec ^{-1}(a+b x)^2}{2 b^2}+\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2-\frac {4 i a \sec ^{-1}(a+b x) \text {ArcTan}\left (e^{i \sec ^{-1}(a+b x)}\right )}{b^2}+\frac {\log (a+b x)}{b^2}+\frac {2 i a \text {PolyLog}\left (2,-i e^{i \sec ^{-1}(a+b x)}\right )}{b^2}-\frac {2 i a \text {PolyLog}\left (2,i e^{i \sec ^{-1}(a+b x)}\right )}{b^2} \]
[Out]
________________________________________________________________________________________
Rubi [A]
time = 0.11, antiderivative size = 154, normalized size of antiderivative = 1.00, number of steps
used = 11, number of rules used = 8, integrand size = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.800, Rules used = {5366, 4511,
4275, 4266, 2317, 2438, 4269, 3556} \begin {gather*} -\frac {a^2 \sec ^{-1}(a+b x)^2}{2 b^2}-\frac {4 i a \sec ^{-1}(a+b x) \text {ArcTan}\left (e^{i \sec ^{-1}(a+b x)}\right )}{b^2}+\frac {2 i a \text {Li}_2\left (-i e^{i \sec ^{-1}(a+b x)}\right )}{b^2}-\frac {2 i a \text {Li}_2\left (i e^{i \sec ^{-1}(a+b x)}\right )}{b^2}+\frac {\log (a+b x)}{b^2}-\frac {(a+b x) \sqrt {1-\frac {1}{(a+b x)^2}} \sec ^{-1}(a+b x)}{b^2}+\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2 \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
Rule 2317
Rule 2438
Rule 3556
Rule 4266
Rule 4269
Rule 4275
Rule 4511
Rule 5366
Rubi steps
\begin {align*} \int x \sec ^{-1}(a+b x)^2 \, dx &=\frac {\text {Subst}\left (\int x^2 \sec (x) (-a+\sec (x)) \tan (x) \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}\\ &=\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2-\frac {\text {Subst}\left (\int x (-a+\sec (x))^2 \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}\\ &=\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2-\frac {\text {Subst}\left (\int \left (a^2 x-2 a x \sec (x)+x \sec ^2(x)\right ) \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}\\ &=-\frac {a^2 \sec ^{-1}(a+b x)^2}{2 b^2}+\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2-\frac {\text {Subst}\left (\int x \sec ^2(x) \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}+\frac {(2 a) \text {Subst}\left (\int x \sec (x) \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}\\ &=-\frac {(a+b x) \sqrt {1-\frac {1}{(a+b x)^2}} \sec ^{-1}(a+b x)}{b^2}-\frac {a^2 \sec ^{-1}(a+b x)^2}{2 b^2}+\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2-\frac {4 i a \sec ^{-1}(a+b x) \tan ^{-1}\left (e^{i \sec ^{-1}(a+b x)}\right )}{b^2}+\frac {\text {Subst}\left (\int \tan (x) \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}-\frac {(2 a) \text {Subst}\left (\int \log \left (1-i e^{i x}\right ) \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}+\frac {(2 a) \text {Subst}\left (\int \log \left (1+i e^{i x}\right ) \, dx,x,\sec ^{-1}(a+b x)\right )}{b^2}\\ &=-\frac {(a+b x) \sqrt {1-\frac {1}{(a+b x)^2}} \sec ^{-1}(a+b x)}{b^2}-\frac {a^2 \sec ^{-1}(a+b x)^2}{2 b^2}+\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2-\frac {4 i a \sec ^{-1}(a+b x) \tan ^{-1}\left (e^{i \sec ^{-1}(a+b x)}\right )}{b^2}+\frac {\log (a+b x)}{b^2}+\frac {(2 i a) \text {Subst}\left (\int \frac {\log (1-i x)}{x} \, dx,x,e^{i \sec ^{-1}(a+b x)}\right )}{b^2}-\frac {(2 i a) \text {Subst}\left (\int \frac {\log (1+i x)}{x} \, dx,x,e^{i \sec ^{-1}(a+b x)}\right )}{b^2}\\ &=-\frac {(a+b x) \sqrt {1-\frac {1}{(a+b x)^2}} \sec ^{-1}(a+b x)}{b^2}-\frac {a^2 \sec ^{-1}(a+b x)^2}{2 b^2}+\frac {1}{2} x^2 \sec ^{-1}(a+b x)^2-\frac {4 i a \sec ^{-1}(a+b x) \tan ^{-1}\left (e^{i \sec ^{-1}(a+b x)}\right )}{b^2}+\frac {\log (a+b x)}{b^2}+\frac {2 i a \text {Li}_2\left (-i e^{i \sec ^{-1}(a+b x)}\right )}{b^2}-\frac {2 i a \text {Li}_2\left (i e^{i \sec ^{-1}(a+b x)}\right )}{b^2}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A]
time = 0.10, size = 142, normalized size = 0.92 \begin {gather*} \frac {-\left ((a+b x) \sqrt {1-\frac {1}{(a+b x)^2}} \sec ^{-1}(a+b x)\right )-\frac {1}{2} a^2 \sec ^{-1}(a+b x)^2+\frac {1}{2} b^2 x^2 \sec ^{-1}(a+b x)^2-4 i a \sec ^{-1}(a+b x) \text {ArcTan}\left (e^{i \sec ^{-1}(a+b x)}\right )+\log (a+b x)+2 i a \text {PolyLog}\left (2,-i e^{i \sec ^{-1}(a+b x)}\right )-2 i a \text {PolyLog}\left (2,i e^{i \sec ^{-1}(a+b x)}\right )}{b^2} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A]
time = 0.47, size = 227, normalized size = 1.47
method | result | size |
derivativedivides | \(\frac {-a \mathrm {arcsec}\left (b x +a \right )^{2} \left (b x +a \right )-2 a \,\mathrm {arcsec}\left (b x +a \right ) \ln \left (1+i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )+2 a \,\mathrm {arcsec}\left (b x +a \right ) \ln \left (1-i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )+2 i a \dilog \left (1+i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )-2 i a \dilog \left (1-i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )+\frac {\mathrm {arcsec}\left (b x +a \right )^{2} \left (b x +a \right )^{2}}{2}-\sqrt {\frac {\left (b x +a \right )^{2}-1}{\left (b x +a \right )^{2}}}\, \mathrm {arcsec}\left (b x +a \right ) \left (b x +a \right )-\ln \left (\frac {1}{b x +a}\right )}{b^{2}}\) | \(227\) |
default | \(\frac {-a \mathrm {arcsec}\left (b x +a \right )^{2} \left (b x +a \right )-2 a \,\mathrm {arcsec}\left (b x +a \right ) \ln \left (1+i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )+2 a \,\mathrm {arcsec}\left (b x +a \right ) \ln \left (1-i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )+2 i a \dilog \left (1+i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )-2 i a \dilog \left (1-i \left (\frac {1}{b x +a}+i \sqrt {1-\frac {1}{\left (b x +a \right )^{2}}}\right )\right )+\frac {\mathrm {arcsec}\left (b x +a \right )^{2} \left (b x +a \right )^{2}}{2}-\sqrt {\frac {\left (b x +a \right )^{2}-1}{\left (b x +a \right )^{2}}}\, \mathrm {arcsec}\left (b x +a \right ) \left (b x +a \right )-\ln \left (\frac {1}{b x +a}\right )}{b^{2}}\) | \(227\) |
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int x \operatorname {asec}^{2}{\left (a + b x \right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int x\,{\mathrm {acos}\left (\frac {1}{a+b\,x}\right )}^2 \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________