Integrand size = 37, antiderivative size = 122 \[ \int \frac {b+2 a x}{\sqrt [4]{c+b x+a x^2} \left (5 c+4 b x+4 a x^2\right )} \, dx=-\frac {\arctan \left (1-\frac {2 \sqrt [4]{c+b x+a x^2}}{\sqrt [4]{c}}\right )}{2 \sqrt [4]{c}}+\frac {\arctan \left (1+\frac {2 \sqrt [4]{c+b x+a x^2}}{\sqrt [4]{c}}\right )}{2 \sqrt [4]{c}}-\frac {\text {arctanh}\left (\frac {\frac {\sqrt [4]{c}}{2}+\frac {\sqrt {c+b x+a x^2}}{\sqrt [4]{c}}}{\sqrt [4]{c+b x+a x^2}}\right )}{2 \sqrt [4]{c}} \]
-1/2*arctan(1-2*(a*x^2+b*x+c)^(1/4)/c^(1/4))/c^(1/4)+1/2*arctan(1+2*(a*x^2 +b*x+c)^(1/4)/c^(1/4))/c^(1/4)-1/2*arctanh((1/2*c^(1/4)+(a*x^2+b*x+c)^(1/2 )/c^(1/4))/(a*x^2+b*x+c)^(1/4))/c^(1/4)
Time = 0.25 (sec) , antiderivative size = 102, normalized size of antiderivative = 0.84 \[ \int \frac {b+2 a x}{\sqrt [4]{c+b x+a x^2} \left (5 c+4 b x+4 a x^2\right )} \, dx=-\frac {\arctan \left (1-\frac {2 \sqrt [4]{c+x (b+a x)}}{\sqrt [4]{c}}\right )-\arctan \left (1+\frac {2 \sqrt [4]{c+x (b+a x)}}{\sqrt [4]{c}}\right )+\text {arctanh}\left (\frac {\sqrt {c}+2 \sqrt {c+x (b+a x)}}{2 \sqrt [4]{c} \sqrt [4]{c+x (b+a x)}}\right )}{2 \sqrt [4]{c}} \]
-1/2*(ArcTan[1 - (2*(c + x*(b + a*x))^(1/4))/c^(1/4)] - ArcTan[1 + (2*(c + x*(b + a*x))^(1/4))/c^(1/4)] + ArcTanh[(Sqrt[c] + 2*Sqrt[c + x*(b + a*x)] )/(2*c^(1/4)*(c + x*(b + a*x))^(1/4))])/c^(1/4)
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
\(\displaystyle \int \frac {2 a x+b}{\sqrt [4]{a x^2+b x+c} \left (4 a x^2+4 b x+5 c\right )} \, dx\) |
\(\Big \downarrow \) 1375 |
\(\displaystyle \int \frac {2 a x+b}{\sqrt [4]{a x^2+b x+c} \left (4 a x^2+4 b x+5 c\right )}dx\) |
3.18.97.3.1 Defintions of rubi rules used
Int[((g_.) + (h_.)*(x_))*((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_)*((d_.) + (e_.)*(x_) + (f_.)*(x_)^2)^(q_), x_Symbol] :> Unintegrable[(g + h*x)*(a + b *x + c*x^2)^p*(d + e*x + f*x^2)^q, x] /; FreeQ[{a, b, c, d, e, f, g, h, p, q}, x]
Time = 1.14 (sec) , antiderivative size = 131, normalized size of antiderivative = 1.07
method | result | size |
pseudoelliptic | \(\frac {\ln \left (\frac {-2 c^{\frac {1}{4}} \left (a \,x^{2}+b x +c \right )^{\frac {1}{4}}+\sqrt {c}+2 \sqrt {a \,x^{2}+b x +c}}{2 c^{\frac {1}{4}} \left (a \,x^{2}+b x +c \right )^{\frac {1}{4}}+\sqrt {c}+2 \sqrt {a \,x^{2}+b x +c}}\right )+2 \arctan \left (\frac {c^{\frac {1}{4}}+2 \left (a \,x^{2}+b x +c \right )^{\frac {1}{4}}}{c^{\frac {1}{4}}}\right )-2 \arctan \left (\frac {c^{\frac {1}{4}}-2 \left (a \,x^{2}+b x +c \right )^{\frac {1}{4}}}{c^{\frac {1}{4}}}\right )}{4 c^{\frac {1}{4}}}\) | \(131\) |
1/4/c^(1/4)*(ln((-2*c^(1/4)*(a*x^2+b*x+c)^(1/4)+c^(1/2)+2*(a*x^2+b*x+c)^(1 /2))/(2*c^(1/4)*(a*x^2+b*x+c)^(1/4)+c^(1/2)+2*(a*x^2+b*x+c)^(1/2)))+2*arct an((c^(1/4)+2*(a*x^2+b*x+c)^(1/4))/c^(1/4))-2*arctan((c^(1/4)-2*(a*x^2+b*x +c)^(1/4))/c^(1/4)))
Result contains complex when optimal does not.
Time = 0.29 (sec) , antiderivative size = 157, normalized size of antiderivative = 1.29 \[ \int \frac {b+2 a x}{\sqrt [4]{c+b x+a x^2} \left (5 c+4 b x+4 a x^2\right )} \, dx=\frac {1}{2} \, \left (\frac {1}{4}\right )^{\frac {1}{4}} \left (-\frac {1}{c}\right )^{\frac {1}{4}} \log \left (2 \, \left (\frac {1}{4}\right )^{\frac {3}{4}} c \left (-\frac {1}{c}\right )^{\frac {3}{4}} + {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}}\right ) - \frac {1}{2} i \, \left (\frac {1}{4}\right )^{\frac {1}{4}} \left (-\frac {1}{c}\right )^{\frac {1}{4}} \log \left (2 i \, \left (\frac {1}{4}\right )^{\frac {3}{4}} c \left (-\frac {1}{c}\right )^{\frac {3}{4}} + {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}}\right ) + \frac {1}{2} i \, \left (\frac {1}{4}\right )^{\frac {1}{4}} \left (-\frac {1}{c}\right )^{\frac {1}{4}} \log \left (-2 i \, \left (\frac {1}{4}\right )^{\frac {3}{4}} c \left (-\frac {1}{c}\right )^{\frac {3}{4}} + {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}}\right ) - \frac {1}{2} \, \left (\frac {1}{4}\right )^{\frac {1}{4}} \left (-\frac {1}{c}\right )^{\frac {1}{4}} \log \left (-2 \, \left (\frac {1}{4}\right )^{\frac {3}{4}} c \left (-\frac {1}{c}\right )^{\frac {3}{4}} + {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}}\right ) \]
1/2*(1/4)^(1/4)*(-1/c)^(1/4)*log(2*(1/4)^(3/4)*c*(-1/c)^(3/4) + (a*x^2 + b *x + c)^(1/4)) - 1/2*I*(1/4)^(1/4)*(-1/c)^(1/4)*log(2*I*(1/4)^(3/4)*c*(-1/ c)^(3/4) + (a*x^2 + b*x + c)^(1/4)) + 1/2*I*(1/4)^(1/4)*(-1/c)^(1/4)*log(- 2*I*(1/4)^(3/4)*c*(-1/c)^(3/4) + (a*x^2 + b*x + c)^(1/4)) - 1/2*(1/4)^(1/4 )*(-1/c)^(1/4)*log(-2*(1/4)^(3/4)*c*(-1/c)^(3/4) + (a*x^2 + b*x + c)^(1/4) )
\[ \int \frac {b+2 a x}{\sqrt [4]{c+b x+a x^2} \left (5 c+4 b x+4 a x^2\right )} \, dx=\int \frac {2 a x + b}{\sqrt [4]{a x^{2} + b x + c} \left (4 a x^{2} + 4 b x + 5 c\right )}\, dx \]
\[ \int \frac {b+2 a x}{\sqrt [4]{c+b x+a x^2} \left (5 c+4 b x+4 a x^2\right )} \, dx=\int { \frac {2 \, a x + b}{{\left (4 \, a x^{2} + 4 \, b x + 5 \, c\right )} {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}}} \,d x } \]
Leaf count of result is larger than twice the leaf count of optimal. 202 vs. \(2 (92) = 184\).
Time = 0.29 (sec) , antiderivative size = 202, normalized size of antiderivative = 1.66 \[ \int \frac {b+2 a x}{\sqrt [4]{c+b x+a x^2} \left (5 c+4 b x+4 a x^2\right )} \, dx=\frac {4^{\frac {3}{4}} \sqrt {2} \arctan \left (\frac {2 \, \sqrt {2} \left (\frac {1}{4}\right )^{\frac {3}{4}} {\left (\sqrt {2} \left (\frac {1}{4}\right )^{\frac {1}{4}} c^{\frac {1}{4}} + 2 \, {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}}\right )}}{c^{\frac {1}{4}}}\right )}{8 \, c^{\frac {1}{4}}} + \frac {4^{\frac {3}{4}} \sqrt {2} \arctan \left (-\frac {2 \, \sqrt {2} \left (\frac {1}{4}\right )^{\frac {3}{4}} {\left (\sqrt {2} \left (\frac {1}{4}\right )^{\frac {1}{4}} c^{\frac {1}{4}} - 2 \, {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}}\right )}}{c^{\frac {1}{4}}}\right )}{8 \, c^{\frac {1}{4}}} - \frac {4^{\frac {3}{4}} \sqrt {2} \log \left (\sqrt {2} \left (\frac {1}{4}\right )^{\frac {1}{4}} {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}} c^{\frac {1}{4}} + \sqrt {a x^{2} + b x + c} + \frac {1}{2} \, \sqrt {c}\right )}{16 \, c^{\frac {1}{4}}} + \frac {4^{\frac {3}{4}} \sqrt {2} \log \left (-\sqrt {2} \left (\frac {1}{4}\right )^{\frac {1}{4}} {\left (a x^{2} + b x + c\right )}^{\frac {1}{4}} c^{\frac {1}{4}} + \sqrt {a x^{2} + b x + c} + \frac {1}{2} \, \sqrt {c}\right )}{16 \, c^{\frac {1}{4}}} \]
1/8*4^(3/4)*sqrt(2)*arctan(2*sqrt(2)*(1/4)^(3/4)*(sqrt(2)*(1/4)^(1/4)*c^(1 /4) + 2*(a*x^2 + b*x + c)^(1/4))/c^(1/4))/c^(1/4) + 1/8*4^(3/4)*sqrt(2)*ar ctan(-2*sqrt(2)*(1/4)^(3/4)*(sqrt(2)*(1/4)^(1/4)*c^(1/4) - 2*(a*x^2 + b*x + c)^(1/4))/c^(1/4))/c^(1/4) - 1/16*4^(3/4)*sqrt(2)*log(sqrt(2)*(1/4)^(1/4 )*(a*x^2 + b*x + c)^(1/4)*c^(1/4) + sqrt(a*x^2 + b*x + c) + 1/2*sqrt(c))/c ^(1/4) + 1/16*4^(3/4)*sqrt(2)*log(-sqrt(2)*(1/4)^(1/4)*(a*x^2 + b*x + c)^( 1/4)*c^(1/4) + sqrt(a*x^2 + b*x + c) + 1/2*sqrt(c))/c^(1/4)
Time = 6.34 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.47 \[ \int \frac {b+2 a x}{\sqrt [4]{c+b x+a x^2} \left (5 c+4 b x+4 a x^2\right )} \, dx=\frac {\sqrt {2}\,\left (\mathrm {atan}\left (\frac {\sqrt {2}\,{\left (a\,x^2+b\,x+c\right )}^{1/4}}{{\left (-c\right )}^{1/4}}\right )-\mathrm {atanh}\left (\frac {\sqrt {2}\,{\left (a\,x^2+b\,x+c\right )}^{1/4}}{{\left (-c\right )}^{1/4}}\right )\right )}{2\,{\left (-c\right )}^{1/4}} \]