Integrand size = 10, antiderivative size = 123 \[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=-\frac {b (a+b x) \sqrt {1-\frac {1}{(a+b x)^2}}}{2 a \left (1-a^2\right ) x}+\frac {b^2 \csc ^{-1}(a+b x)}{2 a^2}-\frac {\csc ^{-1}(a+b x)}{2 x^2}+\frac {\left (1-2 a^2\right ) b^2 \arctan \left (\frac {a-\tan \left (\frac {1}{2} \csc ^{-1}(a+b x)\right )}{\sqrt {1-a^2}}\right )}{a^2 \left (1-a^2\right )^{3/2}} \]
[Out]
Time = 0.15 (sec) , antiderivative size = 123, 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 = {5367, 4512, 3870, 4004, 3916, 2739, 632, 210} \[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=\frac {\left (1-2 a^2\right ) b^2 \arctan \left (\frac {a-\tan \left (\frac {1}{2} \csc ^{-1}(a+b x)\right )}{\sqrt {1-a^2}}\right )}{a^2 \left (1-a^2\right )^{3/2}}+\frac {b^2 \csc ^{-1}(a+b x)}{2 a^2}-\frac {b (a+b x) \sqrt {1-\frac {1}{(a+b x)^2}}}{2 a \left (1-a^2\right ) x}-\frac {\csc ^{-1}(a+b x)}{2 x^2} \]
[In]
[Out]
Rule 210
Rule 632
Rule 2739
Rule 3870
Rule 3916
Rule 4004
Rule 4512
Rule 5367
Rubi steps \begin{align*} \text {integral}& = -\left (b^2 \text {Subst}\left (\int \frac {x \cot (x) \csc (x)}{(-a+\csc (x))^3} \, dx,x,\csc ^{-1}(a+b x)\right )\right ) \\ & = -\frac {\csc ^{-1}(a+b x)}{2 x^2}+\frac {1}{2} b^2 \text {Subst}\left (\int \frac {1}{(-a+\csc (x))^2} \, dx,x,\csc ^{-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 {\csc ^{-1}(a+b x)}{2 x^2}-\frac {b^2 \text {Subst}\left (\int \frac {1-a^2-a \csc (x)}{-a+\csc (x)} \, dx,x,\csc ^{-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 \csc ^{-1}(a+b x)}{2 a^2}-\frac {\csc ^{-1}(a+b x)}{2 x^2}-\frac {\left (\left (1-2 a^2\right ) b^2\right ) \text {Subst}\left (\int \frac {\csc (x)}{-a+\csc (x)} \, dx,x,\csc ^{-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 \csc ^{-1}(a+b x)}{2 a^2}-\frac {\csc ^{-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 \sin (x)} \, dx,x,\csc ^{-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 \csc ^{-1}(a+b x)}{2 a^2}-\frac {\csc ^{-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,\tan \left (\frac {1}{2} \csc ^{-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 \csc ^{-1}(a+b x)}{2 a^2}-\frac {\csc ^{-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 \tan \left (\frac {1}{2} \csc ^{-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 \csc ^{-1}(a+b x)}{2 a^2}-\frac {\csc ^{-1}(a+b x)}{2 x^2}+\frac {\left (1-2 a^2\right ) b^2 \arctan \left (\frac {a-\tan \left (\frac {1}{2} \csc ^{-1}(a+b x)\right )}{\sqrt {1-a^2}}\right )}{a^2 \left (1-a^2\right )^{3/2}} \\ \end{align*}
Result contains complex when optimal does not.
Time = 0.55 (sec) , antiderivative size = 199, normalized size of antiderivative = 1.62 \[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=\frac {\frac {b x (a+b x) \sqrt {\frac {-1+a^2+2 a b x+b^2 x^2}{(a+b x)^2}}}{a \left (-1+a^2\right )}-\csc ^{-1}(a+b x)+\frac {b^2 x^2 \arcsin \left (\frac {1}{a+b x}\right )}{a^2}+\frac {i \left (-1+2 a^2\right ) b^2 x^2 \log \left (\frac {4 (-1+a) a^2 (1+a) \left (\frac {i \left (-1+a^2+a b x\right )}{\sqrt {1-a^2}}+(a+b x) \sqrt {\frac {-1+a^2+2 a b x+b^2 x^2}{(a+b x)^2}}\right )}{\left (-1+2 a^2\right ) b^2 x}\right )}{a^2 \left (1-a^2\right )^{3/2}}}{2 x^2} \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. \(318\) vs. \(2(109)=218\).
Time = 0.71 (sec) , antiderivative size = 319, normalized size of antiderivative = 2.59
method | result | size |
parts | \(-\frac {\operatorname {arccsc}\left (b x +a \right )}{2 x^{2}}+\frac {b \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\, \left (\left (a^{2}-1\right )^{\frac {3}{2}} \arctan \left (\frac {1}{\sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}}\right ) a^{2} b x -2 \ln \left (\frac {2 a^{2}-2+2 a b x +2 \sqrt {a^{2}-1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}}{x}\right ) a^{4} b x -b \arctan \left (\frac {1}{\sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}}\right ) x \left (a^{2}-1\right )^{\frac {3}{2}}+\left (a^{2}-1\right )^{\frac {3}{2}} \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\, a +3 \ln \left (\frac {2 a^{2}-2+2 a b x +2 \sqrt {a^{2}-1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}}{x}\right ) a^{2} b x -b \ln \left (\frac {2 a^{2}-2+2 a b x +2 \sqrt {a^{2}-1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}}{x}\right ) x \right )}{2 \sqrt {\frac {b^{2} x^{2}+2 a b x +a^{2}-1}{\left (b x +a \right )^{2}}}\, \left (b x +a \right ) a^{2} \left (a^{2}-1\right )^{\frac {5}{2}} x}\) | \(319\) |
derivativedivides | \(b^{2} \left (-\frac {\operatorname {arccsc}\left (b x +a \right )}{2 b^{2} x^{2}}-\frac {\sqrt {\left (b x +a \right )^{2}-1}\, \left (\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} a^{3}-\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} a^{2} \left (b x +a \right )-2 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{5}+2 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{4} \left (b x +a \right )-\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} a +\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} \left (b x +a \right )-\left (a^{2}-1\right )^{\frac {3}{2}} \sqrt {\left (b x +a \right )^{2}-1}\, a +3 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{3}-3 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{2} \left (b x +a \right )-a \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right )+\ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) \left (b x +a \right )\right )}{2 \sqrt {\frac {\left (b x +a \right )^{2}-1}{\left (b x +a \right )^{2}}}\, \left (b x +a \right ) a^{2} \left (a^{2}-1\right )^{\frac {5}{2}} b x}\right )\) | \(457\) |
default | \(b^{2} \left (-\frac {\operatorname {arccsc}\left (b x +a \right )}{2 b^{2} x^{2}}-\frac {\sqrt {\left (b x +a \right )^{2}-1}\, \left (\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} a^{3}-\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} a^{2} \left (b x +a \right )-2 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{5}+2 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{4} \left (b x +a \right )-\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} a +\arctan \left (\frac {1}{\sqrt {\left (b x +a \right )^{2}-1}}\right ) \left (a^{2}-1\right )^{\frac {3}{2}} \left (b x +a \right )-\left (a^{2}-1\right )^{\frac {3}{2}} \sqrt {\left (b x +a \right )^{2}-1}\, a +3 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{3}-3 \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) a^{2} \left (b x +a \right )-a \ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right )+\ln \left (\frac {2 \sqrt {a^{2}-1}\, \sqrt {\left (b x +a \right )^{2}-1}+2 \left (b x +a \right ) a -2}{b x}\right ) \left (b x +a \right )\right )}{2 \sqrt {\frac {\left (b x +a \right )^{2}-1}{\left (b x +a \right )^{2}}}\, \left (b x +a \right ) a^{2} \left (a^{2}-1\right )^{\frac {5}{2}} b x}\right )\) | \(457\) |
[In]
[Out]
none
Time = 0.31 (sec) , antiderivative size = 428, normalized size of antiderivative = 3.48 \[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=\left [\frac {{\left (2 \, a^{2} - 1\right )} \sqrt {a^{2} - 1} b^{2} x^{2} \log \left (\frac {a^{2} b x + a^{3} + \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} - 1} {\left (a^{2} - \sqrt {a^{2} - 1} a - 1\right )} - {\left (a b x + a^{2} - 1\right )} \sqrt {a^{2} - 1} - a}{x}\right ) - 2 \, {\left (a^{4} - 2 \, a^{2} + 1\right )} b^{2} x^{2} \arctan \left (-b x - a + \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} - 1}\right ) + {\left (a^{3} - a\right )} b^{2} x^{2} + \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} - 1} {\left (a^{3} - a\right )} b x - {\left (a^{6} - 2 \, a^{4} + a^{2}\right )} \operatorname {arccsc}\left (b x + a\right )}{2 \, {\left (a^{6} - 2 \, a^{4} + a^{2}\right )} x^{2}}, \frac {2 \, {\left (2 \, a^{2} - 1\right )} \sqrt {-a^{2} + 1} b^{2} x^{2} \arctan \left (-\frac {\sqrt {-a^{2} + 1} b x - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} - 1} \sqrt {-a^{2} + 1}}{a^{2} - 1}\right ) - 2 \, {\left (a^{4} - 2 \, a^{2} + 1\right )} b^{2} x^{2} \arctan \left (-b x - a + \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} - 1}\right ) + {\left (a^{3} - a\right )} b^{2} x^{2} + \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} - 1} {\left (a^{3} - a\right )} b x - {\left (a^{6} - 2 \, a^{4} + a^{2}\right )} \operatorname {arccsc}\left (b x + a\right )}{2 \, {\left (a^{6} - 2 \, a^{4} + a^{2}\right )} x^{2}}\right ] \]
[In]
[Out]
\[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=\int \frac {\operatorname {acsc}{\left (a + b x \right )}}{x^{3}}\, dx \]
[In]
[Out]
\[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=\int { \frac {\operatorname {arccsc}\left (b x + a\right )}{x^{3}} \,d x } \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 217 vs. \(2 (108) = 216\).
Time = 0.35 (sec) , antiderivative size = 217, normalized size of antiderivative = 1.76 \[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=\frac {1}{2} \, b {\left (\frac {2 \, {\left (2 \, a^{2} b - b\right )} \arctan \left (\frac {{\left (b x + a\right )} {\left (\sqrt {-\frac {1}{{\left (b x + a\right )}^{2}} + 1} - 1\right )} + a}{\sqrt {-a^{2} + 1}}\right )}{{\left (a^{4} - a^{2}\right )} \sqrt {-a^{2} + 1}} + \frac {2 \, {\left ({\left (b x + a\right )} a b {\left (\sqrt {-\frac {1}{{\left (b x + a\right )}^{2}} + 1} - 1\right )} + b\right )}}{{\left ({\left (b x + a\right )}^{2} {\left (\sqrt {-\frac {1}{{\left (b x + a\right )}^{2}} + 1} - 1\right )}^{2} + 2 \, {\left (b x + a\right )} a {\left (\sqrt {-\frac {1}{{\left (b x + a\right )}^{2}} + 1} - 1\right )} + 1\right )} {\left (a^{3} - a\right )}} - \frac {{\left (\frac {2 \, a b}{b x + a} - b\right )} \arcsin \left (-\frac {1}{{\left (b x + a\right )} {\left (\frac {a}{b x + a} - 1\right )} - a}\right )}{a^{2} {\left (\frac {a}{b x + a} - 1\right )}^{2}}\right )} \]
[In]
[Out]
Timed out. \[ \int \frac {\csc ^{-1}(a+b x)}{x^3} \, dx=\int \frac {\mathrm {asin}\left (\frac {1}{a+b\,x}\right )}{x^3} \,d x \]
[In]
[Out]