Integrand size = 15, antiderivative size = 227 \[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\frac {1}{8} \left (2+i \sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{16} \left (4+(1-i) 2^{3/4}\right ) \log (x) \log \left (1+\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2-\sqrt [4]{-2}\right ) \log (x) \log \left (1+\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{16} \left (4+(1-i) 2^{3/4}\right ) \operatorname {PolyLog}\left (2,-\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2+i \sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2-\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right ) \]
[Out]
Time = 0.17 (sec) , antiderivative size = 227, normalized size of antiderivative = 1.00, number of steps used = 10, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {2404, 2354, 2438} \[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\frac {1}{16} \left (4+(1-i) 2^{3/4}\right ) \operatorname {PolyLog}\left (2,-\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2+i \sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2-\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2+i \sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{16} \left (4+(1-i) 2^{3/4}\right ) \log (x) \log \left (1+\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2-\sqrt [4]{-2}\right ) \log (x) \log \left (\frac {(-1)^{3/4} x}{\sqrt [4]{2}}+1\right ) \]
[In]
[Out]
Rule 2354
Rule 2404
Rule 2438
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {\left (-2+\sqrt [4]{-2}\right ) \log (x)}{8 \left (\sqrt [4]{-2}-x\right )}+\frac {\left (-2 i+\sqrt [4]{-2}\right ) \log (x)}{8 \left (\sqrt [4]{-2}-i x\right )}+\frac {\left (2 i+\sqrt [4]{-2}\right ) \log (x)}{8 \left (\sqrt [4]{-2}+i x\right )}+\frac {\left (2+\sqrt [4]{-2}\right ) \log (x)}{8 \left (\sqrt [4]{-2}+x\right )}\right ) \, dx \\ & = \frac {1}{8} \left (-2+\sqrt [4]{-2}\right ) \int \frac {\log (x)}{\sqrt [4]{-2}-x} \, dx+\frac {1}{8} \left (-2 i+\sqrt [4]{-2}\right ) \int \frac {\log (x)}{\sqrt [4]{-2}-i x} \, dx+\frac {1}{8} \left (2 i+\sqrt [4]{-2}\right ) \int \frac {\log (x)}{\sqrt [4]{-2}+i x} \, dx+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \int \frac {\log (x)}{\sqrt [4]{-2}+x} \, dx \\ & = \frac {1}{8} \left (2+i \sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2-i \sqrt [4]{-2}\right ) \log (x) \log \left (1+\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2-\sqrt [4]{-2}\right ) \log (x) \log \left (1+\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (-2-\sqrt [4]{-2}\right ) \int \frac {\log \left (1-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )}{x} \, dx+\frac {1}{8} \left (i \left (2 i-\sqrt [4]{-2}\right )\right ) \int \frac {\log \left (1-\sqrt [4]{-\frac {1}{2}} x\right )}{x} \, dx+\frac {1}{8} \left (-2+i \sqrt [4]{-2}\right ) \int \frac {\log \left (1+\sqrt [4]{-\frac {1}{2}} x\right )}{x} \, dx+\frac {1}{8} \left (-2+\sqrt [4]{-2}\right ) \int \frac {\log \left (1+\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )}{x} \, dx \\ & = \frac {1}{8} \left (2+i \sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2-i \sqrt [4]{-2}\right ) \log (x) \log \left (1+\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2-\sqrt [4]{-2}\right ) \log (x) \log \left (1+\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{16} \left (4+(1-i) 2^{3/4}\right ) \operatorname {PolyLog}\left (2,-\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2+i \sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(1+i) x}{2^{3/4}}\right )+\frac {1}{8} \left (2-\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,-\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right )+\frac {1}{8} \left (2+\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(-1)^{3/4} x}{\sqrt [4]{2}}\right ) \\ \end{align*}
Time = 0.19 (sec) , antiderivative size = 194, normalized size of antiderivative = 0.85 \[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\frac {1}{8} \left (\left (2+i \sqrt [4]{-2}\right ) \log (x) \log \left (1-\sqrt [4]{-\frac {1}{2}} x\right )+\left (2+\frac {1-i}{\sqrt [4]{2}}\right ) \log (x) \log \left (1+\sqrt [4]{-\frac {1}{2}} x\right )-\left (-2+\sqrt [4]{-2}\right ) \log (x) \log \left (1-\frac {(1-i) x}{2^{3/4}}\right )+\left (2+\sqrt [4]{-2}\right ) \log (x) \log \left (1+\frac {(1-i) x}{2^{3/4}}\right )+\left (2+\frac {1-i}{\sqrt [4]{2}}\right ) \operatorname {PolyLog}\left (2,-\frac {(1+i) x}{2^{3/4}}\right )+\left (2+\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,-\frac {(1-i) x}{2^{3/4}}\right )-\left (-2+\sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(1-i) x}{2^{3/4}}\right )+\left (2+i \sqrt [4]{-2}\right ) \operatorname {PolyLog}\left (2,\frac {(1+i) x}{2^{3/4}}\right )\right ) \]
[In]
[Out]
Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 393 vs. \(2 (171 ) = 342\).
Time = 0.37 (sec) , antiderivative size = 394, normalized size of antiderivative = 1.74
method | result | size |
default | \(\frac {\left (\left (\frac {2^{\frac {3}{4}}}{2}+\frac {i 2^{\frac {3}{4}}}{2}\right )^{3}+1\right ) \left (\ln \left (x \right ) \ln \left (\frac {\frac {2^{\frac {3}{4}}}{2}+\frac {i 2^{\frac {3}{4}}}{2}-x}{\frac {2^{\frac {3}{4}}}{2}+\frac {i 2^{\frac {3}{4}}}{2}}\right )+\operatorname {dilog}\left (\frac {\frac {2^{\frac {3}{4}}}{2}+\frac {i 2^{\frac {3}{4}}}{2}-x}{\frac {2^{\frac {3}{4}}}{2}+\frac {i 2^{\frac {3}{4}}}{2}}\right )\right )}{4 \left (\frac {2^{\frac {3}{4}}}{2}+\frac {i 2^{\frac {3}{4}}}{2}\right )^{3}}+\frac {\left (\left (\frac {i 2^{\frac {3}{4}}}{2}-\frac {2^{\frac {3}{4}}}{2}\right )^{3}+1\right ) \left (\ln \left (x \right ) \ln \left (\frac {\frac {i 2^{\frac {3}{4}}}{2}-\frac {2^{\frac {3}{4}}}{2}-x}{\frac {i 2^{\frac {3}{4}}}{2}-\frac {2^{\frac {3}{4}}}{2}}\right )+\operatorname {dilog}\left (\frac {\frac {i 2^{\frac {3}{4}}}{2}-\frac {2^{\frac {3}{4}}}{2}-x}{\frac {i 2^{\frac {3}{4}}}{2}-\frac {2^{\frac {3}{4}}}{2}}\right )\right )}{4 \left (\frac {i 2^{\frac {3}{4}}}{2}-\frac {2^{\frac {3}{4}}}{2}\right )^{3}}+\frac {\left (\left (-\frac {2^{\frac {3}{4}}}{2}-\frac {i 2^{\frac {3}{4}}}{2}\right )^{3}+1\right ) \left (\ln \left (x \right ) \ln \left (\frac {-\frac {2^{\frac {3}{4}}}{2}-\frac {i 2^{\frac {3}{4}}}{2}-x}{-\frac {2^{\frac {3}{4}}}{2}-\frac {i 2^{\frac {3}{4}}}{2}}\right )+\operatorname {dilog}\left (\frac {-\frac {2^{\frac {3}{4}}}{2}-\frac {i 2^{\frac {3}{4}}}{2}-x}{-\frac {2^{\frac {3}{4}}}{2}-\frac {i 2^{\frac {3}{4}}}{2}}\right )\right )}{4 \left (-\frac {2^{\frac {3}{4}}}{2}-\frac {i 2^{\frac {3}{4}}}{2}\right )^{3}}+\frac {\left (\left (-\frac {i 2^{\frac {3}{4}}}{2}+\frac {2^{\frac {3}{4}}}{2}\right )^{3}+1\right ) \left (\ln \left (x \right ) \ln \left (\frac {-\frac {i 2^{\frac {3}{4}}}{2}+\frac {2^{\frac {3}{4}}}{2}-x}{-\frac {i 2^{\frac {3}{4}}}{2}+\frac {2^{\frac {3}{4}}}{2}}\right )+\operatorname {dilog}\left (\frac {-\frac {i 2^{\frac {3}{4}}}{2}+\frac {2^{\frac {3}{4}}}{2}-x}{-\frac {i 2^{\frac {3}{4}}}{2}+\frac {2^{\frac {3}{4}}}{2}}\right )\right )}{4 \left (-\frac {i 2^{\frac {3}{4}}}{2}+\frac {2^{\frac {3}{4}}}{2}\right )^{3}}\) | \(394\) |
parts | \(\text {Expression too large to display}\) | \(790\) |
risch | \(\text {Expression too large to display}\) | \(1210\) |
[In]
[Out]
\[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\int { \frac {{\left (x^{3} + 1\right )} \log \left (x\right )}{x^{4} + 2} \,d x } \]
[In]
[Out]
\[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\int \frac {\left (x + 1\right ) \left (x^{2} - x + 1\right ) \log {\left (x \right )}}{x^{4} + 2}\, dx \]
[In]
[Out]
\[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\int { \frac {{\left (x^{3} + 1\right )} \log \left (x\right )}{x^{4} + 2} \,d x } \]
[In]
[Out]
\[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\int { \frac {{\left (x^{3} + 1\right )} \log \left (x\right )}{x^{4} + 2} \,d x } \]
[In]
[Out]
Timed out. \[ \int \frac {\left (1+x^3\right ) \log (x)}{2+x^4} \, dx=\int \frac {\ln \left (x\right )\,\left (x^3+1\right )}{x^4+2} \,d x \]
[In]
[Out]