Optimal. Leaf size=118 \[ -\frac {2 \cos (a+b x)}{3 b^3}+\frac {a^2 \cos (a+b x)}{3 b^3}-\frac {a x \cos (a+b x)}{3 b^2}+\frac {x^2 \cos (a+b x)}{3 b}+\frac {a \sin (a+b x)}{3 b^3}-\frac {2 x \sin (a+b x)}{3 b^2}+\frac {a^3 \text {Si}(a+b x)}{3 b^3}+\frac {1}{3} x^3 \text {Si}(a+b x) \]
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Rubi [A]
time = 0.19, antiderivative size = 118, normalized size of antiderivative = 1.00, number of steps
used = 10, number of rules used = 6, integrand size = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.600, Rules used = {6638, 6874,
2718, 3377, 2717, 3380} \begin {gather*} \frac {a^3 \text {Si}(a+b x)}{3 b^3}+\frac {a^2 \cos (a+b x)}{3 b^3}+\frac {a \sin (a+b x)}{3 b^3}-\frac {2 \cos (a+b x)}{3 b^3}-\frac {2 x \sin (a+b x)}{3 b^2}-\frac {a x \cos (a+b x)}{3 b^2}+\frac {1}{3} x^3 \text {Si}(a+b x)+\frac {x^2 \cos (a+b x)}{3 b} \end {gather*}
Antiderivative was successfully verified.
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Rule 2717
Rule 2718
Rule 3377
Rule 3380
Rule 6638
Rule 6874
Rubi steps
\begin {align*} \int x^2 \text {Si}(a+b x) \, dx &=\frac {1}{3} x^3 \text {Si}(a+b x)-\frac {1}{3} b \int \frac {x^3 \sin (a+b x)}{a+b x} \, dx\\ &=\frac {1}{3} x^3 \text {Si}(a+b x)-\frac {1}{3} b \int \left (\frac {a^2 \sin (a+b x)}{b^3}-\frac {a x \sin (a+b x)}{b^2}+\frac {x^2 \sin (a+b x)}{b}-\frac {a^3 \sin (a+b x)}{b^3 (a+b x)}\right ) \, dx\\ &=\frac {1}{3} x^3 \text {Si}(a+b x)-\frac {1}{3} \int x^2 \sin (a+b x) \, dx-\frac {a^2 \int \sin (a+b x) \, dx}{3 b^2}+\frac {a^3 \int \frac {\sin (a+b x)}{a+b x} \, dx}{3 b^2}+\frac {a \int x \sin (a+b x) \, dx}{3 b}\\ &=\frac {a^2 \cos (a+b x)}{3 b^3}-\frac {a x \cos (a+b x)}{3 b^2}+\frac {x^2 \cos (a+b x)}{3 b}+\frac {a^3 \text {Si}(a+b x)}{3 b^3}+\frac {1}{3} x^3 \text {Si}(a+b x)+\frac {a \int \cos (a+b x) \, dx}{3 b^2}-\frac {2 \int x \cos (a+b x) \, dx}{3 b}\\ &=\frac {a^2 \cos (a+b x)}{3 b^3}-\frac {a x \cos (a+b x)}{3 b^2}+\frac {x^2 \cos (a+b x)}{3 b}+\frac {a \sin (a+b x)}{3 b^3}-\frac {2 x \sin (a+b x)}{3 b^2}+\frac {a^3 \text {Si}(a+b x)}{3 b^3}+\frac {1}{3} x^3 \text {Si}(a+b x)+\frac {2 \int \sin (a+b x) \, dx}{3 b^2}\\ &=-\frac {2 \cos (a+b x)}{3 b^3}+\frac {a^2 \cos (a+b x)}{3 b^3}-\frac {a x \cos (a+b x)}{3 b^2}+\frac {x^2 \cos (a+b x)}{3 b}+\frac {a \sin (a+b x)}{3 b^3}-\frac {2 x \sin (a+b x)}{3 b^2}+\frac {a^3 \text {Si}(a+b x)}{3 b^3}+\frac {1}{3} x^3 \text {Si}(a+b x)\\ \end {align*}
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Mathematica [A]
time = 0.10, size = 63, normalized size = 0.53 \begin {gather*} \frac {\left (-2+a^2-a b x+b^2 x^2\right ) \cos (a+b x)+(a-2 b x) \sin (a+b x)+\left (a^3+b^3 x^3\right ) \text {Si}(a+b x)}{3 b^3} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.30, size = 99, normalized size = 0.84
method | result | size |
derivativedivides | \(\frac {\frac {\sinIntegral \left (b x +a \right ) b^{3} x^{3}}{3}+\frac {a^{3} \sinIntegral \left (b x +a \right )}{3}+a^{2} \cos \left (b x +a \right )+a \left (\sin \left (b x +a \right )-\left (b x +a \right ) \cos \left (b x +a \right )\right )+\frac {\left (b x +a \right )^{2} \cos \left (b x +a \right )}{3}-\frac {2 \cos \left (b x +a \right )}{3}-\frac {2 \left (b x +a \right ) \sin \left (b x +a \right )}{3}}{b^{3}}\) | \(99\) |
default | \(\frac {\frac {\sinIntegral \left (b x +a \right ) b^{3} x^{3}}{3}+\frac {a^{3} \sinIntegral \left (b x +a \right )}{3}+a^{2} \cos \left (b x +a \right )+a \left (\sin \left (b x +a \right )-\left (b x +a \right ) \cos \left (b x +a \right )\right )+\frac {\left (b x +a \right )^{2} \cos \left (b x +a \right )}{3}-\frac {2 \cos \left (b x +a \right )}{3}-\frac {2 \left (b x +a \right ) \sin \left (b x +a \right )}{3}}{b^{3}}\) | \(99\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [C] Result contains complex when optimal does not.
time = 0.31, size = 91, normalized size = 0.77 \begin {gather*} \frac {1}{3} \, x^{3} \operatorname {Si}\left (b x + a\right ) - \frac {a^{3} {\left (i \, {\rm Ei}\left (i \, b x + i \, a\right ) - i \, {\rm Ei}\left (-i \, b x - i \, a\right )\right )} - 2 \, {\left ({\left (b x + a\right )}^{2} - 3 \, {\left (b x + a\right )} a + 3 \, a^{2} - 2\right )} \cos \left (b x + a\right ) + 2 \, {\left (2 \, b x - a\right )} \sin \left (b x + a\right )}{6 \, b^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.34, size = 64, normalized size = 0.54 \begin {gather*} \frac {{\left (b^{2} x^{2} - a b x + a^{2} - 2\right )} \cos \left (b x + a\right ) - {\left (2 \, b x - a\right )} \sin \left (b x + a\right ) + {\left (b^{3} x^{3} + a^{3}\right )} \operatorname {Si}\left (b x + a\right )}{3 \, b^{3}} \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 x^{2} \operatorname {Si}{\left (a + b x \right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [C] Result contains higher order function than in optimal. Order 9 vs. order
4.
time = 0.42, size = 252, normalized size = 2.14 \begin {gather*} \frac {1}{3} \, x^{3} \operatorname {Si}\left (b x + a\right ) - \frac {{\left (2 \, b^{2} x^{2} \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} - a^{3} \Im \left ( \operatorname {Ci}\left (b x + a\right ) \right ) \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} + a^{3} \Im \left ( \operatorname {Ci}\left (-b x - a\right ) \right ) \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} - 2 \, a^{3} \operatorname {Si}\left (b x + a\right ) \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} - 2 \, a b x \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} - 2 \, b^{2} x^{2} - a^{3} \Im \left ( \operatorname {Ci}\left (b x + a\right ) \right ) + a^{3} \Im \left ( \operatorname {Ci}\left (-b x - a\right ) \right ) - 2 \, a^{3} \operatorname {Si}\left (b x + a\right ) + 2 \, a^{2} \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} + 2 \, a b x + 8 \, b x \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right ) - 2 \, a^{2} - 4 \, a \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right ) - 4 \, \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} + 4\right )} b}{6 \, {\left (b^{4} \tan \left (\frac {1}{2} \, b x + \frac {1}{2} \, a\right )^{2} + b^{4}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int x^2\,\mathrm {sinint}\left (a+b\,x\right ) \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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