Integrand size = 24, antiderivative size = 62 \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=-\frac {d^2 (b+2 c x)}{a+b x+c x^2}-\frac {4 c d^2 \text {arctanh}\left (\frac {b+2 c x}{\sqrt {b^2-4 a c}}\right )}{\sqrt {b^2-4 a c}} \]
[Out]
Time = 0.02 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {700, 632, 212} \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=-\frac {4 c d^2 \text {arctanh}\left (\frac {b+2 c x}{\sqrt {b^2-4 a c}}\right )}{\sqrt {b^2-4 a c}}-\frac {d^2 (b+2 c x)}{a+b x+c x^2} \]
[In]
[Out]
Rule 212
Rule 632
Rule 700
Rubi steps \begin{align*} \text {integral}& = -\frac {d^2 (b+2 c x)}{a+b x+c x^2}+\left (2 c d^2\right ) \int \frac {1}{a+b x+c x^2} \, dx \\ & = -\frac {d^2 (b+2 c x)}{a+b x+c x^2}-\left (4 c d^2\right ) \text {Subst}\left (\int \frac {1}{b^2-4 a c-x^2} \, dx,x,b+2 c x\right ) \\ & = -\frac {d^2 (b+2 c x)}{a+b x+c x^2}-\frac {4 c d^2 \tanh ^{-1}\left (\frac {b+2 c x}{\sqrt {b^2-4 a c}}\right )}{\sqrt {b^2-4 a c}} \\ \end{align*}
Time = 0.04 (sec) , antiderivative size = 65, normalized size of antiderivative = 1.05 \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=d^2 \left (\frac {-b-2 c x}{a+b x+c x^2}+\frac {4 c \arctan \left (\frac {b+2 c x}{\sqrt {-b^2+4 a c}}\right )}{\sqrt {-b^2+4 a c}}\right ) \]
[In]
[Out]
Time = 2.96 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.00
method | result | size |
default | \(d^{2} \left (\frac {-2 c x -b}{c \,x^{2}+b x +a}+\frac {4 c \arctan \left (\frac {2 c x +b}{\sqrt {4 a c -b^{2}}}\right )}{\sqrt {4 a c -b^{2}}}\right )\) | \(62\) |
risch | \(\frac {-2 c \,d^{2} x -b \,d^{2}}{c \,x^{2}+b x +a}-\frac {2 d^{2} c \ln \left (b +2 c x +\sqrt {-4 a c +b^{2}}\right )}{\sqrt {-4 a c +b^{2}}}+\frac {2 d^{2} c \ln \left (-b -2 c x +\sqrt {-4 a c +b^{2}}\right )}{\sqrt {-4 a c +b^{2}}}\) | \(97\) |
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 144 vs. \(2 (58) = 116\).
Time = 0.28 (sec) , antiderivative size = 309, normalized size of antiderivative = 4.98 \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=\left [-\frac {2 \, {\left (b^{2} c - 4 \, a c^{2}\right )} d^{2} x + {\left (b^{3} - 4 \, a b c\right )} d^{2} - 2 \, {\left (c^{2} d^{2} x^{2} + b c d^{2} x + a c d^{2}\right )} \sqrt {b^{2} - 4 \, a c} \log \left (\frac {2 \, c^{2} x^{2} + 2 \, b c x + b^{2} - 2 \, a c - \sqrt {b^{2} - 4 \, a c} {\left (2 \, c x + b\right )}}{c x^{2} + b x + a}\right )}{a b^{2} - 4 \, a^{2} c + {\left (b^{2} c - 4 \, a c^{2}\right )} x^{2} + {\left (b^{3} - 4 \, a b c\right )} x}, -\frac {2 \, {\left (b^{2} c - 4 \, a c^{2}\right )} d^{2} x + {\left (b^{3} - 4 \, a b c\right )} d^{2} + 4 \, {\left (c^{2} d^{2} x^{2} + b c d^{2} x + a c d^{2}\right )} \sqrt {-b^{2} + 4 \, a c} \arctan \left (-\frac {\sqrt {-b^{2} + 4 \, a c} {\left (2 \, c x + b\right )}}{b^{2} - 4 \, a c}\right )}{a b^{2} - 4 \, a^{2} c + {\left (b^{2} c - 4 \, a c^{2}\right )} x^{2} + {\left (b^{3} - 4 \, a b c\right )} x}\right ] \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 211 vs. \(2 (60) = 120\).
Time = 0.48 (sec) , antiderivative size = 211, normalized size of antiderivative = 3.40 \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=- 2 c d^{2} \sqrt {- \frac {1}{4 a c - b^{2}}} \log {\left (x + \frac {- 8 a c^{2} d^{2} \sqrt {- \frac {1}{4 a c - b^{2}}} + 2 b^{2} c d^{2} \sqrt {- \frac {1}{4 a c - b^{2}}} + 2 b c d^{2}}{4 c^{2} d^{2}} \right )} + 2 c d^{2} \sqrt {- \frac {1}{4 a c - b^{2}}} \log {\left (x + \frac {8 a c^{2} d^{2} \sqrt {- \frac {1}{4 a c - b^{2}}} - 2 b^{2} c d^{2} \sqrt {- \frac {1}{4 a c - b^{2}}} + 2 b c d^{2}}{4 c^{2} d^{2}} \right )} + \frac {- b d^{2} - 2 c d^{2} x}{a + b x + c x^{2}} \]
[In]
[Out]
Exception generated. \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=\text {Exception raised: ValueError} \]
[In]
[Out]
none
Time = 0.30 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.06 \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=\frac {4 \, c d^{2} \arctan \left (\frac {2 \, c x + b}{\sqrt {-b^{2} + 4 \, a c}}\right )}{\sqrt {-b^{2} + 4 \, a c}} - \frac {2 \, c d^{2} x + b d^{2}}{c x^{2} + b x + a} \]
[In]
[Out]
Time = 9.44 (sec) , antiderivative size = 88, normalized size of antiderivative = 1.42 \[ \int \frac {(b d+2 c d x)^2}{\left (a+b x+c x^2\right )^2} \, dx=\frac {4\,c\,d^2\,\mathrm {atan}\left (\frac {b}{\sqrt {4\,a\,c-b^2}}+\frac {2\,c\,x}{\sqrt {4\,a\,c-b^2}}\right )}{\sqrt {4\,a\,c-b^2}}-\frac {b\,d^2}{c\,x^2+b\,x+a}-\frac {2\,c\,d^2\,x}{c\,x^2+b\,x+a} \]
[In]
[Out]