Optimal. Leaf size=169 \[ \frac {2 \sqrt {2} \sqrt {c} \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {b-\sqrt {b^2-4 a c}}}\right )}{n \sqrt {b^2-4 a c} \sqrt {b-\sqrt {b^2-4 a c}}}-\frac {2 \sqrt {2} \sqrt {c} \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {\sqrt {b^2-4 a c}+b}}\right )}{n \sqrt {b^2-4 a c} \sqrt {\sqrt {b^2-4 a c}+b}} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.19, antiderivative size = 169, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 26, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.115, Rules used = {1381, 1093, 205} \[ \frac {2 \sqrt {2} \sqrt {c} \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {b-\sqrt {b^2-4 a c}}}\right )}{n \sqrt {b^2-4 a c} \sqrt {b-\sqrt {b^2-4 a c}}}-\frac {2 \sqrt {2} \sqrt {c} \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {\sqrt {b^2-4 a c}+b}}\right )}{n \sqrt {b^2-4 a c} \sqrt {\sqrt {b^2-4 a c}+b}} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 205
Rule 1093
Rule 1381
Rubi steps
\begin {align*} \int \frac {x^{-1+\frac {n}{2}}}{a+b x^n+c x^{2 n}} \, dx &=\frac {2 \operatorname {Subst}\left (\int \frac {1}{a+b x^2+c x^4} \, dx,x,x^{n/2}\right )}{n}\\ &=\frac {(2 c) \operatorname {Subst}\left (\int \frac {1}{\frac {b}{2}-\frac {1}{2} \sqrt {b^2-4 a c}+c x^2} \, dx,x,x^{n/2}\right )}{\sqrt {b^2-4 a c} n}-\frac {(2 c) \operatorname {Subst}\left (\int \frac {1}{\frac {b}{2}+\frac {1}{2} \sqrt {b^2-4 a c}+c x^2} \, dx,x,x^{n/2}\right )}{\sqrt {b^2-4 a c} n}\\ &=\frac {2 \sqrt {2} \sqrt {c} \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {b-\sqrt {b^2-4 a c}}}\right )}{\sqrt {b^2-4 a c} \sqrt {b-\sqrt {b^2-4 a c}} n}-\frac {2 \sqrt {2} \sqrt {c} \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {b+\sqrt {b^2-4 a c}}}\right )}{\sqrt {b^2-4 a c} \sqrt {b+\sqrt {b^2-4 a c}} n}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A] time = 0.26, size = 145, normalized size = 0.86 \[ \frac {2 \sqrt {2} \sqrt {c} \left (\frac {\tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {b-\sqrt {b^2-4 a c}}}\right )}{\sqrt {b-\sqrt {b^2-4 a c}}}-\frac {\tan ^{-1}\left (\frac {\sqrt {2} \sqrt {c} x^{n/2}}{\sqrt {\sqrt {b^2-4 a c}+b}}\right )}{\sqrt {\sqrt {b^2-4 a c}+b}}\right )}{n \sqrt {b^2-4 a c}} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
fricas [B] time = 0.71, size = 801, normalized size = 4.74 \[ \frac {1}{2} \, \sqrt {2} \sqrt {-\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} + b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}} \log \left (\frac {4 \, c x x^{\frac {1}{2} \, n - 1} + \sqrt {2} {\left ({\left (a b^{3} - 4 \, a^{2} b c\right )} n^{3} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} - {\left (b^{2} - 4 \, a c\right )} n\right )} \sqrt {-\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} + b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}}}{x}\right ) - \frac {1}{2} \, \sqrt {2} \sqrt {-\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} + b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}} \log \left (\frac {4 \, c x x^{\frac {1}{2} \, n - 1} - \sqrt {2} {\left ({\left (a b^{3} - 4 \, a^{2} b c\right )} n^{3} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} - {\left (b^{2} - 4 \, a c\right )} n\right )} \sqrt {-\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} + b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}}}{x}\right ) - \frac {1}{2} \, \sqrt {2} \sqrt {\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} - b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}} \log \left (\frac {4 \, c x x^{\frac {1}{2} \, n - 1} + \sqrt {2} {\left ({\left (a b^{3} - 4 \, a^{2} b c\right )} n^{3} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} + {\left (b^{2} - 4 \, a c\right )} n\right )} \sqrt {\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} - b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}}}{x}\right ) + \frac {1}{2} \, \sqrt {2} \sqrt {\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} - b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}} \log \left (\frac {4 \, c x x^{\frac {1}{2} \, n - 1} - \sqrt {2} {\left ({\left (a b^{3} - 4 \, a^{2} b c\right )} n^{3} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} + {\left (b^{2} - 4 \, a c\right )} n\right )} \sqrt {\frac {{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2} \sqrt {\frac {1}{{\left (a^{2} b^{2} - 4 \, a^{3} c\right )} n^{4}}} - b}{{\left (a b^{2} - 4 \, a^{2} c\right )} n^{2}}}}{x}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
giac [B] time = 1.85, size = 1035, normalized size = 6.12 \[ \frac {\frac {{\left (\sqrt {2} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} b^{4} - 8 \, \sqrt {2} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} a b^{2} c - 2 \, \sqrt {2} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} b^{3} c - 2 \, b^{4} c + 16 \, \sqrt {2} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} a^{2} c^{2} + 8 \, \sqrt {2} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} a b c^{2} + \sqrt {2} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} b^{2} c^{2} + 16 \, a b^{2} c^{2} - 2 \, b^{3} c^{2} - 4 \, \sqrt {2} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} a c^{3} - 32 \, a^{2} c^{3} + 8 \, a b c^{3} + \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} b^{3} - 4 \, \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} a b c - 2 \, \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} b^{2} c + \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c + \sqrt {b^{2} - 4 \, a c} c} b c^{2} + 2 \, {\left (b^{2} - 4 \, a c\right )} b^{2} c - 8 \, {\left (b^{2} - 4 \, a c\right )} a c^{2} + 2 \, {\left (b^{2} - 4 \, a c\right )} b c^{2}\right )} \arctan \left (\frac {2 \, \sqrt {\frac {1}{2}} \sqrt {x^{n}}}{\sqrt {\frac {b + \sqrt {b^{2} - 4 \, a c}}{c}}}\right )}{{\left (a b^{4} - 8 \, a^{2} b^{2} c - 2 \, a b^{3} c + 16 \, a^{3} c^{2} + 8 \, a^{2} b c^{2} + a b^{2} c^{2} - 4 \, a^{2} c^{3}\right )} {\left | c \right |}} + \frac {{\left (\sqrt {2} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} b^{4} - 8 \, \sqrt {2} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} a b^{2} c - 2 \, \sqrt {2} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} b^{3} c + 2 \, b^{4} c + 16 \, \sqrt {2} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} a^{2} c^{2} + 8 \, \sqrt {2} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} a b c^{2} + \sqrt {2} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} b^{2} c^{2} - 16 \, a b^{2} c^{2} - 2 \, b^{3} c^{2} - 4 \, \sqrt {2} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} a c^{3} + 32 \, a^{2} c^{3} + 8 \, a b c^{3} + \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} b^{3} - 4 \, \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} a b c - 2 \, \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} b^{2} c + \sqrt {2} \sqrt {b^{2} - 4 \, a c} \sqrt {b c - \sqrt {b^{2} - 4 \, a c} c} b c^{2} - 2 \, {\left (b^{2} - 4 \, a c\right )} b^{2} c + 8 \, {\left (b^{2} - 4 \, a c\right )} a c^{2} + 2 \, {\left (b^{2} - 4 \, a c\right )} b c^{2}\right )} \arctan \left (\frac {2 \, \sqrt {\frac {1}{2}} \sqrt {x^{n}}}{\sqrt {\frac {b - \sqrt {b^{2} - 4 \, a c}}{c}}}\right )}{{\left (a b^{4} - 8 \, a^{2} b^{2} c - 2 \, a b^{3} c + 16 \, a^{3} c^{2} + 8 \, a^{2} b c^{2} + a b^{2} c^{2} - 4 \, a^{2} c^{3}\right )} {\left | c \right |}}}{2 \, n} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maple [C] time = 0.19, size = 114, normalized size = 0.67 \[ \RootOf \left (\left (16 a^{3} c^{2} n^{4}-8 a^{2} b^{2} c \,n^{4}+a \,b^{4} n^{4}\right ) \textit {\_Z}^{4}+\left (-4 a b c \,n^{2}+b^{3} n^{2}\right ) \textit {\_Z}^{2}+c \right ) \ln \left (\left (4 a^{2} b \,n^{3}-\frac {a \,b^{3} n^{3}}{c}\right ) \RootOf \left (\left (16 a^{3} c^{2} n^{4}-8 a^{2} b^{2} c \,n^{4}+a \,b^{4} n^{4}\right ) \textit {\_Z}^{4}+\left (-4 a b c \,n^{2}+b^{3} n^{2}\right ) \textit {\_Z}^{2}+c \right )^{3}+\left (2 a n -\frac {b^{2} n}{c}\right ) \RootOf \left (\left (16 a^{3} c^{2} n^{4}-8 a^{2} b^{2} c \,n^{4}+a \,b^{4} n^{4}\right ) \textit {\_Z}^{4}+\left (-4 a b c \,n^{2}+b^{3} n^{2}\right ) \textit {\_Z}^{2}+c \right )+x^{\frac {n}{2}}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^{\frac {1}{2} \, n - 1}}{c x^{2 \, n} + b x^{n} + a}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int \frac {x^{\frac {n}{2}-1}}{a+b\,x^n+c\,x^{2\,n}} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^{\frac {n}{2} - 1}}{a + b x^{n} + c x^{2 n}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________