Optimal. Leaf size=89 \[ -\frac{2 \text{CosIntegral}(b x) \sin (b x)}{b^3}+\frac{2 x \text{CosIntegral}(b x) \cos (b x)}{b^2}+\frac{\text{Si}(2 b x)}{b^3}-\frac{3 x}{4 b^2}-\frac{x \sin ^2(b x)}{2 b^2}-\frac{5 \sin (b x) \cos (b x)}{4 b^3}+\frac{x^2 \text{CosIntegral}(b x) \sin (b x)}{b} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.112837, antiderivative size = 89, normalized size of antiderivative = 1., number of steps used = 14, number of rules used = 9, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.75, Rules used = {6514, 12, 3443, 2635, 8, 6520, 6512, 4406, 3299} \[ -\frac{2 \text{CosIntegral}(b x) \sin (b x)}{b^3}+\frac{2 x \text{CosIntegral}(b x) \cos (b x)}{b^2}+\frac{\text{Si}(2 b x)}{b^3}-\frac{3 x}{4 b^2}-\frac{x \sin ^2(b x)}{2 b^2}-\frac{5 \sin (b x) \cos (b x)}{4 b^3}+\frac{x^2 \text{CosIntegral}(b x) \sin (b x)}{b} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 6514
Rule 12
Rule 3443
Rule 2635
Rule 8
Rule 6520
Rule 6512
Rule 4406
Rule 3299
Rubi steps
\begin{align*} \int x^2 \cos (b x) \text{Ci}(b x) \, dx &=\frac{x^2 \text{Ci}(b x) \sin (b x)}{b}-\frac{2 \int x \text{Ci}(b x) \sin (b x) \, dx}{b}-\int \frac{x \cos (b x) \sin (b x)}{b} \, dx\\ &=\frac{2 x \cos (b x) \text{Ci}(b x)}{b^2}+\frac{x^2 \text{Ci}(b x) \sin (b x)}{b}-\frac{2 \int \cos (b x) \text{Ci}(b x) \, dx}{b^2}-\frac{\int x \cos (b x) \sin (b x) \, dx}{b}-\frac{2 \int \frac{\cos ^2(b x)}{b} \, dx}{b}\\ &=\frac{2 x \cos (b x) \text{Ci}(b x)}{b^2}-\frac{2 \text{Ci}(b x) \sin (b x)}{b^3}+\frac{x^2 \text{Ci}(b x) \sin (b x)}{b}-\frac{x \sin ^2(b x)}{2 b^2}+\frac{\int \sin ^2(b x) \, dx}{2 b^2}-\frac{2 \int \cos ^2(b x) \, dx}{b^2}+\frac{2 \int \frac{\cos (b x) \sin (b x)}{b x} \, dx}{b^2}\\ &=\frac{2 x \cos (b x) \text{Ci}(b x)}{b^2}-\frac{5 \cos (b x) \sin (b x)}{4 b^3}-\frac{2 \text{Ci}(b x) \sin (b x)}{b^3}+\frac{x^2 \text{Ci}(b x) \sin (b x)}{b}-\frac{x \sin ^2(b x)}{2 b^2}+\frac{2 \int \frac{\cos (b x) \sin (b x)}{x} \, dx}{b^3}+\frac{\int 1 \, dx}{4 b^2}-\frac{\int 1 \, dx}{b^2}\\ &=-\frac{3 x}{4 b^2}+\frac{2 x \cos (b x) \text{Ci}(b x)}{b^2}-\frac{5 \cos (b x) \sin (b x)}{4 b^3}-\frac{2 \text{Ci}(b x) \sin (b x)}{b^3}+\frac{x^2 \text{Ci}(b x) \sin (b x)}{b}-\frac{x \sin ^2(b x)}{2 b^2}+\frac{2 \int \frac{\sin (2 b x)}{2 x} \, dx}{b^3}\\ &=-\frac{3 x}{4 b^2}+\frac{2 x \cos (b x) \text{Ci}(b x)}{b^2}-\frac{5 \cos (b x) \sin (b x)}{4 b^3}-\frac{2 \text{Ci}(b x) \sin (b x)}{b^3}+\frac{x^2 \text{Ci}(b x) \sin (b x)}{b}-\frac{x \sin ^2(b x)}{2 b^2}+\frac{\int \frac{\sin (2 b x)}{x} \, dx}{b^3}\\ &=-\frac{3 x}{4 b^2}+\frac{2 x \cos (b x) \text{Ci}(b x)}{b^2}-\frac{5 \cos (b x) \sin (b x)}{4 b^3}-\frac{2 \text{Ci}(b x) \sin (b x)}{b^3}+\frac{x^2 \text{Ci}(b x) \sin (b x)}{b}-\frac{x \sin ^2(b x)}{2 b^2}+\frac{\text{Si}(2 b x)}{b^3}\\ \end{align*}
Mathematica [A] time = 0.0809702, size = 64, normalized size = 0.72 \[ \frac{8 \text{CosIntegral}(b x) \left (\left (b^2 x^2-2\right ) \sin (b x)+2 b x \cos (b x)\right )+8 \text{Si}(2 b x)-8 b x-5 \sin (2 b x)+2 b x \cos (2 b x)}{8 b^3} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.073, size = 66, normalized size = 0.7 \begin{align*}{\frac{1}{{b}^{3}} \left ({\it Ci} \left ( bx \right ) \left ({b}^{2}{x}^{2}\sin \left ( bx \right ) -2\,\sin \left ( bx \right ) +2\,bx\cos \left ( bx \right ) \right ) +{\frac{bx \left ( \cos \left ( bx \right ) \right ) ^{2}}{2}}-{\frac{5\,\sin \left ( bx \right ) \cos \left ( bx \right ) }{4}}-{\frac{5\,bx}{4}}+{\it Si} \left ( 2\,bx \right ) \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2}{\rm Ci}\left (b x\right ) \cos \left (b x\right )\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (x^{2} \cos \left (b x\right ) \operatorname{Ci}\left (b x\right ), x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2} \cos{\left (b x \right )} \operatorname{Ci}{\left (b x \right )}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [C] time = 1.19961, size = 88, normalized size = 0.99 \begin{align*}{\left (\frac{2 \, x \cos \left (b x\right )}{b^{2}} + \frac{{\left (b^{2} x^{2} - 2\right )} \sin \left (b x\right )}{b^{3}}\right )} \operatorname{Ci}\left (b x\right ) - \frac{2 \, b x - \Im \left ( \operatorname{Ci}\left (2 \, b x\right ) \right ) + \Im \left ( \operatorname{Ci}\left (-2 \, b x\right ) \right ) - 2 \, \operatorname{Si}\left (2 \, b x\right )}{2 \, b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]