Integrand size = 10, antiderivative size = 114 \[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=\frac {b (a+b x) \sqrt {1+\frac {1}{(a+b x)^2}}}{2 a \left (1+a^2\right ) x}+\frac {b^2 \text {csch}^{-1}(a+b x)}{2 a^2}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2}-\frac {\left (1+2 a^2\right ) b^2 \text {arctanh}\left (\frac {a+\tanh \left (\frac {1}{2} \text {csch}^{-1}(a+b x)\right )}{\sqrt {1+a^2}}\right )}{a^2 \left (1+a^2\right )^{3/2}} \]
[Out]
Time = 0.16 (sec) , antiderivative size = 114, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.800, Rules used = {6457, 5577, 3870, 4004, 3916, 2739, 632, 212} \[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=-\frac {\left (2 a^2+1\right ) b^2 \text {arctanh}\left (\frac {\tanh \left (\frac {1}{2} \text {csch}^{-1}(a+b x)\right )+a}{\sqrt {a^2+1}}\right )}{a^2 \left (a^2+1\right )^{3/2}}+\frac {b^2 \text {csch}^{-1}(a+b x)}{2 a^2}+\frac {b (a+b x) \sqrt {\frac {1}{(a+b x)^2}+1}}{2 a \left (a^2+1\right ) x}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2} \]
[In]
[Out]
Rule 212
Rule 632
Rule 2739
Rule 3870
Rule 3916
Rule 4004
Rule 5577
Rule 6457
Rubi steps \begin{align*} \text {integral}& = -\left (b^2 \text {Subst}\left (\int \frac {x \coth (x) \text {csch}(x)}{(-a+\text {csch}(x))^3} \, dx,x,\text {csch}^{-1}(a+b x)\right )\right ) \\ & = -\frac {\text {csch}^{-1}(a+b x)}{2 x^2}+\frac {1}{2} b^2 \text {Subst}\left (\int \frac {1}{(-a+\text {csch}(x))^2} \, dx,x,\text {csch}^{-1}(a+b x)\right ) \\ & = \frac {b (a+b x) \sqrt {1+\frac {1}{(a+b x)^2}}}{2 a \left (1+a^2\right ) x}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2}+\frac {b^2 \text {Subst}\left (\int \frac {-1-a^2-a \text {csch}(x)}{-a+\text {csch}(x)} \, dx,x,\text {csch}^{-1}(a+b x)\right )}{2 a \left (1+a^2\right )} \\ & = \frac {b (a+b x) \sqrt {1+\frac {1}{(a+b x)^2}}}{2 a \left (1+a^2\right ) x}+\frac {b^2 \text {csch}^{-1}(a+b x)}{2 a^2}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2}-\frac {\left (\left (1+2 a^2\right ) b^2\right ) \text {Subst}\left (\int \frac {\text {csch}(x)}{-a+\text {csch}(x)} \, dx,x,\text {csch}^{-1}(a+b x)\right )}{2 a^2 \left (1+a^2\right )} \\ & = \frac {b (a+b x) \sqrt {1+\frac {1}{(a+b x)^2}}}{2 a \left (1+a^2\right ) x}+\frac {b^2 \text {csch}^{-1}(a+b x)}{2 a^2}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2}-\frac {\left (\left (1+2 a^2\right ) b^2\right ) \text {Subst}\left (\int \frac {1}{1-a \sinh (x)} \, dx,x,\text {csch}^{-1}(a+b x)\right )}{2 a^2 \left (1+a^2\right )} \\ & = \frac {b (a+b x) \sqrt {1+\frac {1}{(a+b x)^2}}}{2 a \left (1+a^2\right ) x}+\frac {b^2 \text {csch}^{-1}(a+b x)}{2 a^2}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2}-\frac {\left (\left (1+2 a^2\right ) b^2\right ) \text {Subst}\left (\int \frac {1}{1-2 a x-x^2} \, dx,x,\tanh \left (\frac {1}{2} \text {csch}^{-1}(a+b x)\right )\right )}{a^2 \left (1+a^2\right )} \\ & = \frac {b (a+b x) \sqrt {1+\frac {1}{(a+b x)^2}}}{2 a \left (1+a^2\right ) x}+\frac {b^2 \text {csch}^{-1}(a+b x)}{2 a^2}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2}+\frac {\left (2 \left (1+2 a^2\right ) b^2\right ) \text {Subst}\left (\int \frac {1}{4 \left (1+a^2\right )-x^2} \, dx,x,-2 a-2 \tanh \left (\frac {1}{2} \text {csch}^{-1}(a+b x)\right )\right )}{a^2 \left (1+a^2\right )} \\ & = \frac {b (a+b x) \sqrt {1+\frac {1}{(a+b x)^2}}}{2 a \left (1+a^2\right ) x}+\frac {b^2 \text {csch}^{-1}(a+b x)}{2 a^2}-\frac {\text {csch}^{-1}(a+b x)}{2 x^2}-\frac {\left (1+2 a^2\right ) b^2 \text {arctanh}\left (\frac {a+\tanh \left (\frac {1}{2} \text {csch}^{-1}(a+b x)\right )}{\sqrt {1+a^2}}\right )}{a^2 \left (1+a^2\right )^{3/2}} \\ \end{align*}
Time = 0.47 (sec) , antiderivative size = 220, normalized size of antiderivative = 1.93 \[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=\frac {1}{2} \left (\frac {b (a+b x) \sqrt {\frac {1+a^2+2 a b x+b^2 x^2}{(a+b x)^2}}}{a \left (1+a^2\right ) x}-\frac {\text {csch}^{-1}(a+b x)}{x^2}+\frac {b^2 \text {arcsinh}\left (\frac {1}{a+b x}\right )}{a^2}+\frac {\left (1+2 a^2\right ) b^2 \log (x)}{a^2 \left (1+a^2\right )^{3/2}}-\frac {\left (1+2 a^2\right ) b^2 \log \left (1+a^2+a b x+a \sqrt {1+a^2} \sqrt {\frac {1+a^2+2 a b x+b^2 x^2}{(a+b x)^2}}+\sqrt {1+a^2} b x \sqrt {\frac {1+a^2+2 a b x+b^2 x^2}{(a+b x)^2}}\right )}{a^2 \left (1+a^2\right )^{3/2}}\right ) \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. \(317\) vs. \(2(100)=200\).
Time = 0.66 (sec) , antiderivative size = 318, normalized size of antiderivative = 2.79
method | result | size |
parts | \(-\frac {\operatorname {arccsch}\left (b x +a \right )}{2 x^{2}}+\frac {b \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\, \left (\left (a^{2}+1\right )^{\frac {3}{2}} \operatorname {arctanh}\left (\frac {1}{\sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}\right ) a^{2} b x -2 \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right ) a^{4} b x +b \,\operatorname {arctanh}\left (\frac {1}{\sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}\right ) x \left (a^{2}+1\right )^{\frac {3}{2}}+\left (a^{2}+1\right )^{\frac {3}{2}} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\, a -3 \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right ) a^{2} b x -b \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right ) x \right )}{2 \sqrt {\frac {b^{2} x^{2}+2 a b x +a^{2}+1}{\left (b x +a \right )^{2}}}\, \left (b x +a \right ) a^{2} \left (a^{2}+1\right )^{\frac {5}{2}} x}\) | \(318\) |
derivativedivides | \(b^{2} \left (-\frac {\operatorname {arccsch}\left (b x +a \right )}{2 b^{2} x^{2}}+\frac {\sqrt {\left (b x +a \right )^{2}+1}\, \left (-\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} a^{3}+\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} a^{2} \left (b x +a \right )+2 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{5}-2 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{4} \left (b x +a \right )+\sqrt {\left (b x +a \right )^{2}+1}\, \left (a^{2}+1\right )^{\frac {3}{2}} a -\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} a +\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} \left (b x +a \right )+3 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{3}-3 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{2} \left (b x +a \right )+a \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right )-\ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) \left (b x +a \right )\right )}{2 \sqrt {\frac {\left (b x +a \right )^{2}+1}{\left (b x +a \right )^{2}}}\, \left (b x +a \right ) a^{2} \left (a^{2}+1\right )^{\frac {5}{2}} b x}\right )\) | \(456\) |
default | \(b^{2} \left (-\frac {\operatorname {arccsch}\left (b x +a \right )}{2 b^{2} x^{2}}+\frac {\sqrt {\left (b x +a \right )^{2}+1}\, \left (-\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} a^{3}+\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} a^{2} \left (b x +a \right )+2 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{5}-2 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{4} \left (b x +a \right )+\sqrt {\left (b x +a \right )^{2}+1}\, \left (a^{2}+1\right )^{\frac {3}{2}} a -\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} a +\operatorname {arctanh}\left (\frac {1}{\sqrt {\left (b x +a \right )^{2}+1}}\right ) \left (a^{2}+1\right )^{\frac {3}{2}} \left (b x +a \right )+3 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{3}-3 \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) a^{2} \left (b x +a \right )+a \ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right )-\ln \left (\frac {2 \sqrt {a^{2}+1}\, \sqrt {\left (b x +a \right )^{2}+1}+2 \left (b x +a \right ) a +2}{b x}\right ) \left (b x +a \right )\right )}{2 \sqrt {\frac {\left (b x +a \right )^{2}+1}{\left (b x +a \right )^{2}}}\, \left (b x +a \right ) a^{2} \left (a^{2}+1\right )^{\frac {5}{2}} b x}\right )\) | \(456\) |
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 461 vs. \(2 (100) = 200\).
Time = 0.28 (sec) , antiderivative size = 461, normalized size of antiderivative = 4.04 \[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=\frac {{\left (2 \, a^{2} + 1\right )} \sqrt {a^{2} + 1} b^{2} x^{2} \log \left (-\frac {a^{2} b x + a^{3} - {\left (a b x + a^{2} + {\left (a b x + a^{2}\right )} \sqrt {\frac {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{b^{2} x^{2} + 2 \, a b x + a^{2}}} + 1\right )} \sqrt {a^{2} + 1} + {\left (a^{3} + {\left (a^{2} + 1\right )} b x + a\right )} \sqrt {\frac {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{b^{2} x^{2} + 2 \, a b x + a^{2}}} + a}{x}\right ) + {\left (a^{4} + 2 \, a^{2} + 1\right )} b^{2} x^{2} \log \left (-b x + {\left (b x + a\right )} \sqrt {\frac {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{b^{2} x^{2} + 2 \, a b x + a^{2}}} - a + 1\right ) - {\left (a^{4} + 2 \, a^{2} + 1\right )} b^{2} x^{2} \log \left (-b x + {\left (b x + a\right )} \sqrt {\frac {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{b^{2} x^{2} + 2 \, a b x + a^{2}}} - a - 1\right ) + {\left (a^{3} + a\right )} b^{2} x^{2} - {\left (a^{6} + 2 \, a^{4} + a^{2}\right )} \log \left (\frac {{\left (b x + a\right )} \sqrt {\frac {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{b^{2} x^{2} + 2 \, a b x + a^{2}}} + 1}{b x + a}\right ) + {\left ({\left (a^{3} + a\right )} b^{2} x^{2} + {\left (a^{4} + a^{2}\right )} b x\right )} \sqrt {\frac {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{b^{2} x^{2} + 2 \, a b x + a^{2}}}}{2 \, {\left (a^{6} + 2 \, a^{4} + a^{2}\right )} x^{2}} \]
[In]
[Out]
\[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=\int \frac {\operatorname {acsch}{\left (a + b x \right )}}{x^{3}}\, dx \]
[In]
[Out]
\[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=\int { \frac {\operatorname {arcsch}\left (b x + a\right )}{x^{3}} \,d x } \]
[In]
[Out]
\[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=\int { \frac {\operatorname {arcsch}\left (b x + a\right )}{x^{3}} \,d x } \]
[In]
[Out]
Timed out. \[ \int \frac {\text {csch}^{-1}(a+b x)}{x^3} \, dx=\int \frac {\mathrm {asinh}\left (\frac {1}{a+b\,x}\right )}{x^3} \,d x \]
[In]
[Out]