Integrand size = 13, antiderivative size = 143 \[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=-\frac {3 b c \cosh \left (\frac {b}{d}\right ) \text {Chi}\left (\frac {b c}{d (c+d x)}\right )}{4 d^2}+\frac {3 b c \cosh \left (\frac {3 b}{d}\right ) \text {Chi}\left (\frac {3 b c}{d (c+d x)}\right )}{4 d^2}+\frac {(c+d x) \sinh ^3\left (\frac {b x}{c+d x}\right )}{d}+\frac {3 b c \sinh \left (\frac {b}{d}\right ) \text {Shi}\left (\frac {b c}{d (c+d x)}\right )}{4 d^2}-\frac {3 b c \sinh \left (\frac {3 b}{d}\right ) \text {Shi}\left (\frac {3 b c}{d (c+d x)}\right )}{4 d^2} \]
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Time = 0.17 (sec) , antiderivative size = 143, normalized size of antiderivative = 1.00, number of steps used = 9, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.385, Rules used = {5726, 3394, 3384, 3379, 3382} \[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=-\frac {3 b c \cosh \left (\frac {b}{d}\right ) \text {Chi}\left (\frac {b c}{d (c+d x)}\right )}{4 d^2}+\frac {3 b c \cosh \left (\frac {3 b}{d}\right ) \text {Chi}\left (\frac {3 b c}{d (c+d x)}\right )}{4 d^2}+\frac {3 b c \sinh \left (\frac {b}{d}\right ) \text {Shi}\left (\frac {b c}{d (c+d x)}\right )}{4 d^2}-\frac {3 b c \sinh \left (\frac {3 b}{d}\right ) \text {Shi}\left (\frac {3 b c}{d (c+d x)}\right )}{4 d^2}+\frac {(c+d x) \sinh ^3\left (\frac {b x}{c+d x}\right )}{d} \]
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Rule 3379
Rule 3382
Rule 3384
Rule 3394
Rule 5726
Rubi steps \begin{align*} \text {integral}& = -\frac {\text {Subst}\left (\int \frac {\sinh ^3\left (\frac {b}{d}-\frac {b c x}{d}\right )}{x^2} \, dx,x,\frac {1}{c+d x}\right )}{d} \\ & = \frac {(c+d x) \sinh ^3\left (\frac {b x}{c+d x}\right )}{d}-\frac {(3 b c) \text {Subst}\left (\int \left (-\frac {\cosh \left (\frac {3 b}{d}-\frac {3 b c x}{d}\right )}{4 x}+\frac {\cosh \left (\frac {b}{d}-\frac {b c x}{d}\right )}{4 x}\right ) \, dx,x,\frac {1}{c+d x}\right )}{d^2} \\ & = \frac {(c+d x) \sinh ^3\left (\frac {b x}{c+d x}\right )}{d}+\frac {(3 b c) \text {Subst}\left (\int \frac {\cosh \left (\frac {3 b}{d}-\frac {3 b c x}{d}\right )}{x} \, dx,x,\frac {1}{c+d x}\right )}{4 d^2}-\frac {(3 b c) \text {Subst}\left (\int \frac {\cosh \left (\frac {b}{d}-\frac {b c x}{d}\right )}{x} \, dx,x,\frac {1}{c+d x}\right )}{4 d^2} \\ & = \frac {(c+d x) \sinh ^3\left (\frac {b x}{c+d x}\right )}{d}-\frac {\left (3 b c \cosh \left (\frac {b}{d}\right )\right ) \text {Subst}\left (\int \frac {\cosh \left (\frac {b c x}{d}\right )}{x} \, dx,x,\frac {1}{c+d x}\right )}{4 d^2}+\frac {\left (3 b c \cosh \left (\frac {3 b}{d}\right )\right ) \text {Subst}\left (\int \frac {\cosh \left (\frac {3 b c x}{d}\right )}{x} \, dx,x,\frac {1}{c+d x}\right )}{4 d^2}+\frac {\left (3 b c \sinh \left (\frac {b}{d}\right )\right ) \text {Subst}\left (\int \frac {\sinh \left (\frac {b c x}{d}\right )}{x} \, dx,x,\frac {1}{c+d x}\right )}{4 d^2}-\frac {\left (3 b c \sinh \left (\frac {3 b}{d}\right )\right ) \text {Subst}\left (\int \frac {\sinh \left (\frac {3 b c x}{d}\right )}{x} \, dx,x,\frac {1}{c+d x}\right )}{4 d^2} \\ & = -\frac {3 b c \cosh \left (\frac {b}{d}\right ) \text {Chi}\left (\frac {b c}{d (c+d x)}\right )}{4 d^2}+\frac {3 b c \cosh \left (\frac {3 b}{d}\right ) \text {Chi}\left (\frac {3 b c}{d (c+d x)}\right )}{4 d^2}+\frac {(c+d x) \sinh ^3\left (\frac {b x}{c+d x}\right )}{d}+\frac {3 b c \sinh \left (\frac {b}{d}\right ) \text {Shi}\left (\frac {b c}{d (c+d x)}\right )}{4 d^2}-\frac {3 b c \sinh \left (\frac {3 b}{d}\right ) \text {Shi}\left (\frac {3 b c}{d (c+d x)}\right )}{4 d^2} \\ \end{align*}
Time = 0.44 (sec) , antiderivative size = 232, normalized size of antiderivative = 1.62 \[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=\frac {-c d e^{-\frac {3 b x}{c+d x}}+3 c d e^{-\frac {b x}{c+d x}}-3 c d e^{\frac {b x}{c+d x}}+c d e^{\frac {3 b x}{c+d x}}-d^2 e^{-\frac {3 b x}{c+d x}} x+d^2 e^{\frac {3 b x}{c+d x}} x-6 b c \cosh \left (\frac {b}{d}\right ) \text {Chi}\left (\frac {b c}{c d+d^2 x}\right )+6 b c \cosh \left (\frac {3 b}{d}\right ) \text {Chi}\left (\frac {3 b c}{c d+d^2 x}\right )-6 d^2 x \sinh \left (\frac {b x}{c+d x}\right )+6 b c \sinh \left (\frac {b}{d}\right ) \text {Shi}\left (\frac {b c}{c d+d^2 x}\right )-6 b c \sinh \left (\frac {3 b}{d}\right ) \text {Shi}\left (\frac {3 b c}{c d+d^2 x}\right )}{8 d^2} \]
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Time = 3.35 (sec) , antiderivative size = 250, normalized size of antiderivative = 1.75
method | result | size |
risch | \(\frac {3 b c \,{\mathrm e}^{\frac {b}{d}} \operatorname {Ei}_{1}\left (\frac {b c}{d \left (d x +c \right )}\right )}{8 d^{2}}+\frac {3 \,{\mathrm e}^{-\frac {b x}{d x +c}} x}{8}+\frac {3 b c \,{\mathrm e}^{-\frac {b}{d}} \operatorname {Ei}_{1}\left (-\frac {b c}{d \left (d x +c \right )}\right )}{8 d^{2}}-\frac {3 \,{\mathrm e}^{\frac {b x}{d x +c}} x}{8}+\frac {{\mathrm e}^{\frac {3 b x}{d x +c}} x}{8}-\frac {3 \,{\mathrm e}^{\frac {3 b}{d}} \operatorname {Ei}_{1}\left (\frac {3 b c}{d \left (d x +c \right )}\right ) b c}{8 d^{2}}-\frac {{\mathrm e}^{-\frac {3 b x}{d x +c}} x}{8}-\frac {3 \,{\mathrm e}^{-\frac {3 b}{d}} \operatorname {Ei}_{1}\left (-\frac {3 b c}{d \left (d x +c \right )}\right ) b c}{8 d^{2}}+\frac {3 \,{\mathrm e}^{-\frac {b x}{d x +c}} c}{8 d}-\frac {3 c \,{\mathrm e}^{\frac {b x}{d x +c}}}{8 d}+\frac {{\mathrm e}^{\frac {3 b x}{d x +c}} c}{8 d}-\frac {{\mathrm e}^{-\frac {3 b x}{d x +c}} c}{8 d}\) | \(250\) |
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Leaf count of result is larger than twice the leaf count of optimal. 701 vs. \(2 (135) = 270\).
Time = 0.28 (sec) , antiderivative size = 701, normalized size of antiderivative = 4.90 \[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=\frac {3 \, {\left (b c {\rm Ei}\left (-\frac {3 \, b c}{d^{2} x + c d}\right ) \cosh \left (\frac {3 \, b}{d}\right ) - b c {\rm Ei}\left (-\frac {b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b}{d}\right )\right )} \sinh \left (\frac {b x}{d x + c}\right )^{4} + 2 \, {\left (d^{2} x + c d\right )} \sinh \left (\frac {b x}{d x + c}\right )^{3} - 6 \, {\left (b c {\rm Ei}\left (-\frac {3 \, b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{2} \cosh \left (\frac {3 \, b}{d}\right ) - b c {\rm Ei}\left (-\frac {b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{2} \cosh \left (\frac {b}{d}\right )\right )} \sinh \left (\frac {b x}{d x + c}\right )^{2} + 3 \, {\left (b c {\rm Ei}\left (-\frac {3 \, b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{4} + b c {\rm Ei}\left (\frac {3 \, b c}{d^{2} x + c d}\right )\right )} \cosh \left (\frac {3 \, b}{d}\right ) - 3 \, {\left (b c {\rm Ei}\left (-\frac {b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{4} + b c {\rm Ei}\left (\frac {b c}{d^{2} x + c d}\right )\right )} \cosh \left (\frac {b}{d}\right ) - 6 \, {\left (d^{2} x - {\left (d^{2} x + c d\right )} \cosh \left (\frac {b x}{d x + c}\right )^{2} + c d\right )} \sinh \left (\frac {b x}{d x + c}\right ) + 3 \, {\left (b c {\rm Ei}\left (-\frac {3 \, b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{4} - 2 \, b c {\rm Ei}\left (-\frac {3 \, b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{2} \sinh \left (\frac {b x}{d x + c}\right )^{2} + b c {\rm Ei}\left (-\frac {3 \, b c}{d^{2} x + c d}\right ) \sinh \left (\frac {b x}{d x + c}\right )^{4} - b c {\rm Ei}\left (\frac {3 \, b c}{d^{2} x + c d}\right )\right )} \sinh \left (\frac {3 \, b}{d}\right ) - 3 \, {\left (b c {\rm Ei}\left (-\frac {b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{4} - 2 \, b c {\rm Ei}\left (-\frac {b c}{d^{2} x + c d}\right ) \cosh \left (\frac {b x}{d x + c}\right )^{2} \sinh \left (\frac {b x}{d x + c}\right )^{2} + b c {\rm Ei}\left (-\frac {b c}{d^{2} x + c d}\right ) \sinh \left (\frac {b x}{d x + c}\right )^{4} - b c {\rm Ei}\left (\frac {b c}{d^{2} x + c d}\right )\right )} \sinh \left (\frac {b}{d}\right )}{8 \, {\left (d^{2} \cosh \left (\frac {b x}{d x + c}\right )^{4} - 2 \, d^{2} \cosh \left (\frac {b x}{d x + c}\right )^{2} \sinh \left (\frac {b x}{d x + c}\right )^{2} + d^{2} \sinh \left (\frac {b x}{d x + c}\right )^{4}\right )}} \]
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Timed out. \[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=\text {Timed out} \]
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\[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=\int { \sinh \left (\frac {b x}{d x + c}\right )^{3} \,d x } \]
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\[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=\int { \sinh \left (\frac {b x}{d x + c}\right )^{3} \,d x } \]
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Timed out. \[ \int \sinh ^3\left (\frac {b x}{c+d x}\right ) \, dx=\int {\mathrm {sinh}\left (\frac {b\,x}{c+d\,x}\right )}^3 \,d x \]
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