Optimal. Leaf size=26 \[ \frac {a x^2}{2}+\frac {b \tanh ^{-1}\left (\sin \left (c+d x^2\right )\right )}{2 d} \]
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Rubi [A] time = 0.02, antiderivative size = 26, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {14, 4204, 3770} \[ \frac {a x^2}{2}+\frac {b \tanh ^{-1}\left (\sin \left (c+d x^2\right )\right )}{2 d} \]
Antiderivative was successfully verified.
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Rule 14
Rule 3770
Rule 4204
Rubi steps
\begin {align*} \int x \left (a+b \sec \left (c+d x^2\right )\right ) \, dx &=\int \left (a x+b x \sec \left (c+d x^2\right )\right ) \, dx\\ &=\frac {a x^2}{2}+b \int x \sec \left (c+d x^2\right ) \, dx\\ &=\frac {a x^2}{2}+\frac {1}{2} b \operatorname {Subst}\left (\int \sec (c+d x) \, dx,x,x^2\right )\\ &=\frac {a x^2}{2}+\frac {b \tanh ^{-1}\left (\sin \left (c+d x^2\right )\right )}{2 d}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 26, normalized size = 1.00 \[ \frac {a x^2}{2}+\frac {b \tanh ^{-1}\left (\sin \left (c+d x^2\right )\right )}{2 d} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.75, size = 42, normalized size = 1.62 \[ \frac {2 \, a d x^{2} + b \log \left (\sin \left (d x^{2} + c\right ) + 1\right ) - b \log \left (-\sin \left (d x^{2} + c\right ) + 1\right )}{4 \, d} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.55, size = 50, normalized size = 1.92 \[ \frac {{\left (d x^{2} + c\right )} a + b \log \left ({\left | \tan \left (\frac {1}{2} \, d x^{2} + \frac {1}{2} \, c\right ) + 1 \right |}\right ) - b \log \left ({\left | \tan \left (\frac {1}{2} \, d x^{2} + \frac {1}{2} \, c\right ) - 1 \right |}\right )}{2 \, d} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.20, size = 39, normalized size = 1.50 \[ \frac {a \,x^{2}}{2}+\frac {b \ln \left (\sec \left (d \,x^{2}+c \right )+\tan \left (d \,x^{2}+c \right )\right )}{2 d}+\frac {c a}{2 d} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.31, size = 31, normalized size = 1.19 \[ \frac {1}{2} \, a x^{2} + \frac {b \log \left (\sec \left (d x^{2} + c\right ) + \tan \left (d x^{2} + c\right )\right )}{2 \, d} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.58, size = 67, normalized size = 2.58 \[ \frac {a\,x^2}{2}+\frac {b\,\ln \left (-b\,x\,2{}\mathrm {i}-2\,b\,x\,{\mathrm {e}}^{d\,x^2\,1{}\mathrm {i}}\,{\mathrm {e}}^{c\,1{}\mathrm {i}}\right )}{2\,d}-\frac {b\,\ln \left (b\,x\,2{}\mathrm {i}-2\,b\,x\,{\mathrm {e}}^{d\,x^2\,1{}\mathrm {i}}\,{\mathrm {e}}^{c\,1{}\mathrm {i}}\right )}{2\,d} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 2.87, size = 42, normalized size = 1.62 \[ \begin {cases} \frac {a \left (c + d x^{2}\right ) + b \log {\left (\tan {\left (c + d x^{2} \right )} + \sec {\left (c + d x^{2} \right )} \right )}}{2 d} & \text {for}\: d \neq 0 \\\frac {x^{2} \left (a + b \sec {\relax (c )}\right )}{2} & \text {otherwise} \end {cases} \]
Verification of antiderivative is not currently implemented for this CAS.
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