Optimal. Leaf size=103 \[ \frac {i e^{2 i a} 2^{-m-5} x^m (-i b x)^{-m} \Gamma (m+3,-2 i b x)}{b^3}-\frac {i e^{-2 i a} 2^{-m-5} x^m (i b x)^{-m} \Gamma (m+3,2 i b x)}{b^3}+\frac {x^{m+3}}{2 (m+3)} \]
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Rubi [A] time = 0.14, antiderivative size = 103, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 3, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {3312, 3307, 2181} \[ \frac {i e^{2 i a} 2^{-m-5} x^m (-i b x)^{-m} \text {Gamma}(m+3,-2 i b x)}{b^3}-\frac {i e^{-2 i a} 2^{-m-5} x^m (i b x)^{-m} \text {Gamma}(m+3,2 i b x)}{b^3}+\frac {x^{m+3}}{2 (m+3)} \]
Antiderivative was successfully verified.
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Rule 2181
Rule 3307
Rule 3312
Rubi steps
\begin {align*} \int x^{2+m} \cos ^2(a+b x) \, dx &=\int \left (\frac {x^{2+m}}{2}+\frac {1}{2} x^{2+m} \cos (2 a+2 b x)\right ) \, dx\\ &=\frac {x^{3+m}}{2 (3+m)}+\frac {1}{2} \int x^{2+m} \cos (2 a+2 b x) \, dx\\ &=\frac {x^{3+m}}{2 (3+m)}+\frac {1}{4} \int e^{-i (2 a+2 b x)} x^{2+m} \, dx+\frac {1}{4} \int e^{i (2 a+2 b x)} x^{2+m} \, dx\\ &=\frac {x^{3+m}}{2 (3+m)}+\frac {i 2^{-5-m} e^{2 i a} x^m (-i b x)^{-m} \Gamma (3+m,-2 i b x)}{b^3}-\frac {i 2^{-5-m} e^{-2 i a} x^m (i b x)^{-m} \Gamma (3+m,2 i b x)}{b^3}\\ \end {align*}
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Mathematica [A] time = 0.10, size = 96, normalized size = 0.93 \[ \frac {1}{32} x^m \left (\frac {i e^{2 i a} 2^{-m} (-i b x)^{-m} \Gamma (m+3,-2 i b x)}{b^3}-\frac {i e^{-2 i a} 2^{-m} (i b x)^{-m} \Gamma (m+3,2 i b x)}{b^3}+\frac {16 x^3}{m+3}\right ) \]
Antiderivative was successfully verified.
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fricas [A] time = 0.63, size = 77, normalized size = 0.75 \[ \frac {4 \, b x x^{m + 2} + {\left (i \, m + 3 i\right )} e^{\left (-{\left (m + 2\right )} \log \left (2 i \, b\right ) - 2 i \, a\right )} \Gamma \left (m + 3, 2 i \, b x\right ) + {\left (-i \, m - 3 i\right )} e^{\left (-{\left (m + 2\right )} \log \left (-2 i \, b\right ) + 2 i \, a\right )} \Gamma \left (m + 3, -2 i \, b x\right )}{8 \, {\left (b m + 3 \, b\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int x^{m + 2} \cos \left (b x + a\right )^{2}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [F] time = 0.15, size = 0, normalized size = 0.00 \[ \int x^{2+m} \left (\cos ^{2}\left (b x +a \right )\right )\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \frac {{\left (m + 3\right )} \int x^{2} x^{m} \cos \left (2 \, b x + 2 \, a\right )\,{d x} + e^{\left (m \log \relax (x) + 3 \, \log \relax (x)\right )}}{2 \, {\left (m + 3\right )}} \]
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 \[ \int x^{m+2}\,{\cos \left (a+b\,x\right )}^2 \,d x \]
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 \[ \int x^{m + 2} \cos ^{2}{\left (a + b x \right )}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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