Optimal. Leaf size=227 \[ -\frac {\log \left (-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {a}+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\log \left (\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {a}+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}-\frac {\tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\tan ^{-1}\left (\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}+1\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n} \]
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Rubi [A] time = 0.16, antiderivative size = 227, normalized size of antiderivative = 1.00, number of steps used = 10, number of rules used = 6, integrand size = 17, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.353, Rules used = {211, 1165, 628, 1162, 617, 204} \[ -\frac {\log \left (-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {a}+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\log \left (\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {a}+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}-\frac {\tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\tan ^{-1}\left (\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}+1\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n} \]
Antiderivative was successfully verified.
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Rule 204
Rule 211
Rule 617
Rule 628
Rule 1162
Rule 1165
Rubi steps
\begin {align*} \int \frac {1}{a x+b x \log ^4\left (c x^n\right )} \, dx &=\frac {\operatorname {Subst}\left (\int \frac {1}{a+b x^4} \, dx,x,\log \left (c x^n\right )\right )}{n}\\ &=\frac {\operatorname {Subst}\left (\int \frac {\sqrt {a}-\sqrt {b} x^2}{a+b x^4} \, dx,x,\log \left (c x^n\right )\right )}{2 \sqrt {a} n}+\frac {\operatorname {Subst}\left (\int \frac {\sqrt {a}+\sqrt {b} x^2}{a+b x^4} \, dx,x,\log \left (c x^n\right )\right )}{2 \sqrt {a} n}\\ &=\frac {\operatorname {Subst}\left (\int \frac {1}{\frac {\sqrt {a}}{\sqrt {b}}-\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}+x^2} \, dx,x,\log \left (c x^n\right )\right )}{4 \sqrt {a} \sqrt {b} n}+\frac {\operatorname {Subst}\left (\int \frac {1}{\frac {\sqrt {a}}{\sqrt {b}}+\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}+x^2} \, dx,x,\log \left (c x^n\right )\right )}{4 \sqrt {a} \sqrt {b} n}-\frac {\operatorname {Subst}\left (\int \frac {\frac {\sqrt {2} \sqrt [4]{a}}{\sqrt [4]{b}}+2 x}{-\frac {\sqrt {a}}{\sqrt {b}}-\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}-x^2} \, dx,x,\log \left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}-\frac {\operatorname {Subst}\left (\int \frac {\frac {\sqrt {2} \sqrt [4]{a}}{\sqrt [4]{b}}-2 x}{-\frac {\sqrt {a}}{\sqrt {b}}+\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}-x^2} \, dx,x,\log \left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}\\ &=-\frac {\log \left (\sqrt {a}-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\log \left (\sqrt {a}+\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\operatorname {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1-\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n}-\frac {\operatorname {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1+\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n}\\ &=-\frac {\tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\tan ^{-1}\left (1+\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} \sqrt [4]{b} n}-\frac {\log \left (\sqrt {a}-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}+\frac {\log \left (\sqrt {a}+\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {b} \log ^2\left (c x^n\right )\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n}\\ \end {align*}
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Mathematica [A] time = 0.07, size = 167, normalized size = 0.74 \[ \frac {-\log \left (-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {a}+\sqrt {b} \log ^2\left (c x^n\right )\right )+\log \left (\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} \log \left (c x^n\right )+\sqrt {a}+\sqrt {b} \log ^2\left (c x^n\right )\right )-2 \tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}\right )+2 \tan ^{-1}\left (\frac {\sqrt {2} \sqrt [4]{b} \log \left (c x^n\right )}{\sqrt [4]{a}}+1\right )}{4 \sqrt {2} a^{3/4} \sqrt [4]{b} n} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.46, size = 195, normalized size = 0.86 \[ \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} \arctan \left (\sqrt {a^{2} n^{2} \sqrt {-\frac {1}{a^{3} b n^{4}}} + n^{2} \log \relax (x)^{2} + 2 \, n \log \relax (c) \log \relax (x) + \log \relax (c)^{2}} a^{2} b n^{3} \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {3}{4}} - {\left (a^{2} b n^{4} \log \relax (x) + a^{2} b n^{3} \log \relax (c)\right )} \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {3}{4}}\right ) + \frac {1}{4} \, \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} \log \left (a n \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} + n \log \relax (x) + \log \relax (c)\right ) - \frac {1}{4} \, \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} \log \left (-a n \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} + n \log \relax (x) + \log \relax (c)\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.22, size = 170, normalized size = 0.75 \[ -\frac {1}{2} \, \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} \arctan \left (\frac {\pi b {\left (\mathrm {sgn}\relax (c) - 1\right )} + 2 \, \left (-a b^{3}\right )^{\frac {1}{4}}}{2 \, {\left (b n \log \relax (x) + b \log \left ({\left | c \right |}\right )\right )}}\right ) + \frac {1}{8} \, \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} \log \left (\frac {1}{4} \, {\left (\pi b n {\left (\mathrm {sgn}\relax (x) - 1\right )} + \pi b {\left (\mathrm {sgn}\relax (c) - 1\right )}\right )}^{2} + {\left (b n \log \left ({\left | x \right |}\right ) + b \log \left ({\left | c \right |}\right ) + \left (-a b^{3}\right )^{\frac {1}{4}}\right )}^{2}\right ) - \frac {1}{8} \, \left (-\frac {1}{a^{3} b n^{4}}\right )^{\frac {1}{4}} \log \left (\frac {1}{4} \, {\left (\pi b n {\left (\mathrm {sgn}\relax (x) - 1\right )} + \pi b {\left (\mathrm {sgn}\relax (c) - 1\right )}\right )}^{2} + {\left (b n \log \left ({\left | x \right |}\right ) + b \log \left ({\left | c \right |}\right ) - \left (-a b^{3}\right )^{\frac {1}{4}}\right )}^{2}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.07, size = 168, normalized size = 0.74 \[ -\frac {\left (\frac {a}{b}\right )^{\frac {1}{4}} \sqrt {2}\, \arctan \left (-\frac {\sqrt {2}\, \ln \left (c \,x^{n}\right )}{\left (\frac {a}{b}\right )^{\frac {1}{4}}}+1\right )}{4 a n}+\frac {\left (\frac {a}{b}\right )^{\frac {1}{4}} \sqrt {2}\, \arctan \left (\frac {\sqrt {2}\, \ln \left (c \,x^{n}\right )}{\left (\frac {a}{b}\right )^{\frac {1}{4}}}+1\right )}{4 a n}+\frac {\left (\frac {a}{b}\right )^{\frac {1}{4}} \sqrt {2}\, \ln \left (\frac {\ln \left (c \,x^{n}\right )^{2}+\left (\frac {a}{b}\right )^{\frac {1}{4}} \sqrt {2}\, \ln \left (c \,x^{n}\right )+\sqrt {\frac {a}{b}}}{\ln \left (c \,x^{n}\right )^{2}-\left (\frac {a}{b}\right )^{\frac {1}{4}} \sqrt {2}\, \ln \left (c \,x^{n}\right )+\sqrt {\frac {a}{b}}}\right )}{8 a n} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{b x \log \left (c x^{n}\right )^{4} + a x}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 2.24, size = 95, normalized size = 0.42 \[ -\frac {\ln \left ({\left (-a\right )}^{1/4}+b^{1/4}\,\ln \left (c\,x^n\right )\right )-\ln \left ({\left (-a\right )}^{1/4}-b^{1/4}\,\ln \left (c\,x^n\right )\right )+\ln \left ({\left (-a\right )}^{1/4}-b^{1/4}\,\ln \left (c\,x^n\right )\,1{}\mathrm {i}\right )\,1{}\mathrm {i}-\ln \left ({\left (-a\right )}^{1/4}+b^{1/4}\,\ln \left (c\,x^n\right )\,1{}\mathrm {i}\right )\,1{}\mathrm {i}}{4\,{\left (-a\right )}^{3/4}\,b^{1/4}\,n} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 36.01, size = 246, normalized size = 1.08 \[ \begin {cases} \frac {\tilde {\infty } \log {\relax (x )}}{\log {\relax (c )}^{4}} & \text {for}\: a = 0 \wedge b = 0 \wedge n = 0 \\\frac {\log {\relax (x )}}{a + b \log {\relax (c )}^{4}} & \text {for}\: n = 0 \\\frac {\log {\relax (x )}}{a} & \text {for}\: b = 0 \\- \frac {1}{b \left (3 n^{4} \log {\relax (x )}^{3} + 9 n^{3} \log {\relax (c )} \log {\relax (x )}^{2} + 9 n^{2} \log {\relax (c )}^{2} \log {\relax (x )} + 3 n \log {\relax (c )}^{3}\right )} & \text {for}\: a = 0 \\- \frac {\sqrt [4]{-1} \sqrt [4]{\frac {1}{b}} \log {\left (- \sqrt [4]{-1} \sqrt [4]{a} \sqrt [4]{\frac {1}{b}} + n \log {\relax (x )} + \log {\relax (c )} \right )}}{4 a^{\frac {3}{4}} n} + \frac {\sqrt [4]{-1} \sqrt [4]{\frac {1}{b}} \log {\left (\sqrt [4]{-1} \sqrt [4]{a} \sqrt [4]{\frac {1}{b}} + n \log {\relax (x )} + \log {\relax (c )} \right )}}{4 a^{\frac {3}{4}} n} - \frac {\sqrt [4]{-1} \sqrt [4]{\frac {1}{b}} \operatorname {atan}{\left (\frac {\left (-1\right )^{\frac {3}{4}} n \log {\relax (x )}}{\sqrt [4]{a} \sqrt [4]{\frac {1}{b}}} + \frac {\left (-1\right )^{\frac {3}{4}} \log {\relax (c )}}{\sqrt [4]{a} \sqrt [4]{\frac {1}{b}}} \right )}}{2 a^{\frac {3}{4}} n} & \text {otherwise} \end {cases} \]
Verification of antiderivative is not currently implemented for this CAS.
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