Optimal. Leaf size=47 \[ -\frac {a^2 \log (\cos (c+d x))}{d}+\frac {2 a b \sec (c+d x)}{d}+\frac {b^2 \sec ^2(c+d x)}{2 d} \]
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Rubi [A]
time = 0.02, antiderivative size = 47, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 19, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.105, Rules used = {3970, 45}
\begin {gather*} -\frac {a^2 \log (\cos (c+d x))}{d}+\frac {2 a b \sec (c+d x)}{d}+\frac {b^2 \sec ^2(c+d x)}{2 d} \end {gather*}
Antiderivative was successfully verified.
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Rule 45
Rule 3970
Rubi steps
\begin {align*} \int (a+b \sec (c+d x))^2 \tan (c+d x) \, dx &=\frac {\text {Subst}\left (\int \frac {(a+x)^2}{x} \, dx,x,b \sec (c+d x)\right )}{d}\\ &=\frac {\text {Subst}\left (\int \left (2 a+\frac {a^2}{x}+x\right ) \, dx,x,b \sec (c+d x)\right )}{d}\\ &=-\frac {a^2 \log (\cos (c+d x))}{d}+\frac {2 a b \sec (c+d x)}{d}+\frac {b^2 \sec ^2(c+d x)}{2 d}\\ \end {align*}
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Mathematica [A]
time = 0.06, size = 42, normalized size = 0.89 \begin {gather*} \frac {-2 a^2 \log (\cos (c+d x))+4 a b \sec (c+d x)+b^2 \sec ^2(c+d x)}{2 d} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.05, size = 40, normalized size = 0.85
method | result | size |
derivativedivides | \(\frac {\frac {b^{2} \left (\sec ^{2}\left (d x +c \right )\right )}{2}+2 a b \sec \left (d x +c \right )+a^{2} \ln \left (\sec \left (d x +c \right )\right )}{d}\) | \(40\) |
default | \(\frac {\frac {b^{2} \left (\sec ^{2}\left (d x +c \right )\right )}{2}+2 a b \sec \left (d x +c \right )+a^{2} \ln \left (\sec \left (d x +c \right )\right )}{d}\) | \(40\) |
risch | \(i a^{2} x +\frac {2 i a^{2} c}{d}+\frac {2 b \left (2 a \,{\mathrm e}^{3 i \left (d x +c \right )}+b \,{\mathrm e}^{2 i \left (d x +c \right )}+2 \,{\mathrm e}^{i \left (d x +c \right )} a \right )}{d \left ({\mathrm e}^{2 i \left (d x +c \right )}+1\right )^{2}}-\frac {a^{2} \ln \left ({\mathrm e}^{2 i \left (d x +c \right )}+1\right )}{d}\) | \(94\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.28, size = 42, normalized size = 0.89 \begin {gather*} -\frac {2 \, a^{2} \log \left (\cos \left (d x + c\right )\right ) - \frac {4 \, a b \cos \left (d x + c\right ) + b^{2}}{\cos \left (d x + c\right )^{2}}}{2 \, d} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 3.18, size = 51, normalized size = 1.09 \begin {gather*} -\frac {2 \, a^{2} \cos \left (d x + c\right )^{2} \log \left (-\cos \left (d x + c\right )\right ) - 4 \, a b \cos \left (d x + c\right ) - b^{2}}{2 \, d \cos \left (d x + c\right )^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.13, size = 60, normalized size = 1.28 \begin {gather*} \begin {cases} \frac {a^{2} \log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )}}{2 d} + \frac {2 a b \sec {\left (c + d x \right )}}{d} + \frac {b^{2} \sec ^{2}{\left (c + d x \right )}}{2 d} & \text {for}\: d \neq 0 \\x \left (a + b \sec {\left (c \right )}\right )^{2} \tan {\left (c \right )} & \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. 191 vs.
\(2 (45) = 90\).
time = 0.56, size = 191, normalized size = 4.06 \begin {gather*} \frac {2 \, a^{2} \log \left ({\left | -\frac {\cos \left (d x + c\right ) - 1}{\cos \left (d x + c\right ) + 1} + 1 \right |}\right ) - 2 \, a^{2} \log \left ({\left | -\frac {\cos \left (d x + c\right ) - 1}{\cos \left (d x + c\right ) + 1} - 1 \right |}\right ) + \frac {3 \, a^{2} + 8 \, a b + \frac {6 \, a^{2} {\left (\cos \left (d x + c\right ) - 1\right )}}{\cos \left (d x + c\right ) + 1} + \frac {8 \, a b {\left (\cos \left (d x + c\right ) - 1\right )}}{\cos \left (d x + c\right ) + 1} - \frac {4 \, b^{2} {\left (\cos \left (d x + c\right ) - 1\right )}}{\cos \left (d x + c\right ) + 1} + \frac {3 \, a^{2} {\left (\cos \left (d x + c\right ) - 1\right )}^{2}}{{\left (\cos \left (d x + c\right ) + 1\right )}^{2}}}{{\left (\frac {\cos \left (d x + c\right ) - 1}{\cos \left (d x + c\right ) + 1} + 1\right )}^{2}}}{2 \, d} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.53, size = 81, normalized size = 1.72 \begin {gather*} \frac {4\,a\,b-{\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )}^2\,\left (4\,a\,b-2\,b^2\right )}{d\,\left ({\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )}^4-2\,{\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )}^2+1\right )}+\frac {2\,a^2\,\mathrm {atanh}\left ({\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )}^2\right )}{d} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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