Integrand size = 26, antiderivative size = 117 \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\frac {3}{4} \left (b^2-4 a c\right ) d^4 (b+2 c x) \sqrt {a+b x+c x^2}+\frac {1}{2} d^4 (b+2 c x)^3 \sqrt {a+b x+c x^2}+\frac {3 \left (b^2-4 a c\right )^2 d^4 \text {arctanh}\left (\frac {b+2 c x}{2 \sqrt {c} \sqrt {a+b x+c x^2}}\right )}{8 \sqrt {c}} \]
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Time = 0.04 (sec) , antiderivative size = 117, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.115, Rules used = {706, 635, 212} \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\frac {3 d^4 \left (b^2-4 a c\right )^2 \text {arctanh}\left (\frac {b+2 c x}{2 \sqrt {c} \sqrt {a+b x+c x^2}}\right )}{8 \sqrt {c}}+\frac {3}{4} d^4 \left (b^2-4 a c\right ) (b+2 c x) \sqrt {a+b x+c x^2}+\frac {1}{2} d^4 (b+2 c x)^3 \sqrt {a+b x+c x^2} \]
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Rule 212
Rule 635
Rule 706
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} d^4 (b+2 c x)^3 \sqrt {a+b x+c x^2}+\frac {1}{4} \left (3 \left (b^2-4 a c\right ) d^2\right ) \int \frac {(b d+2 c d x)^2}{\sqrt {a+b x+c x^2}} \, dx \\ & = \frac {3}{4} \left (b^2-4 a c\right ) d^4 (b+2 c x) \sqrt {a+b x+c x^2}+\frac {1}{2} d^4 (b+2 c x)^3 \sqrt {a+b x+c x^2}+\frac {1}{8} \left (3 \left (b^2-4 a c\right )^2 d^4\right ) \int \frac {1}{\sqrt {a+b x+c x^2}} \, dx \\ & = \frac {3}{4} \left (b^2-4 a c\right ) d^4 (b+2 c x) \sqrt {a+b x+c x^2}+\frac {1}{2} d^4 (b+2 c x)^3 \sqrt {a+b x+c x^2}+\frac {1}{4} \left (3 \left (b^2-4 a c\right )^2 d^4\right ) \text {Subst}\left (\int \frac {1}{4 c-x^2} \, dx,x,\frac {b+2 c x}{\sqrt {a+b x+c x^2}}\right ) \\ & = \frac {3}{4} \left (b^2-4 a c\right ) d^4 (b+2 c x) \sqrt {a+b x+c x^2}+\frac {1}{2} d^4 (b+2 c x)^3 \sqrt {a+b x+c x^2}+\frac {3 \left (b^2-4 a c\right )^2 d^4 \tanh ^{-1}\left (\frac {b+2 c x}{2 \sqrt {c} \sqrt {a+b x+c x^2}}\right )}{8 \sqrt {c}} \\ \end{align*}
Time = 0.76 (sec) , antiderivative size = 100, normalized size of antiderivative = 0.85 \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\frac {1}{4} d^4 \left ((b+2 c x) \sqrt {a+x (b+c x)} \left (5 b^2+8 b c x+4 c \left (-3 a+2 c x^2\right )\right )+\frac {3 \left (b^2-4 a c\right )^2 \text {arctanh}\left (\frac {\sqrt {c} x}{-\sqrt {a}+\sqrt {a+x (b+c x)}}\right )}{\sqrt {c}}\right ) \]
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Time = 2.67 (sec) , antiderivative size = 114, normalized size of antiderivative = 0.97
method | result | size |
risch | \(-\frac {\left (-16 c^{3} x^{3}-24 b \,c^{2} x^{2}+24 a \,c^{2} x -18 b^{2} c x +12 a b c -5 b^{3}\right ) \sqrt {c \,x^{2}+b x +a}\, d^{4}}{4}+\frac {\left (\frac {3}{8} b^{4}+6 a^{2} c^{2}-3 a \,b^{2} c \right ) \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right ) d^{4}}{\sqrt {c}}\) | \(114\) |
default | \(d^{4} \left (\frac {b^{4} \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{\sqrt {c}}+16 c^{4} \left (\frac {x^{3} \sqrt {c \,x^{2}+b x +a}}{4 c}-\frac {7 b \left (\frac {x^{2} \sqrt {c \,x^{2}+b x +a}}{3 c}-\frac {5 b \left (\frac {x \sqrt {c \,x^{2}+b x +a}}{2 c}-\frac {3 b \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}-\frac {a \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{6 c}-\frac {2 a \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{3 c}\right )}{8 c}-\frac {3 a \left (\frac {x \sqrt {c \,x^{2}+b x +a}}{2 c}-\frac {3 b \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}-\frac {a \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}\right )+8 b^{3} c \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )+32 c^{3} b \left (\frac {x^{2} \sqrt {c \,x^{2}+b x +a}}{3 c}-\frac {5 b \left (\frac {x \sqrt {c \,x^{2}+b x +a}}{2 c}-\frac {3 b \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}-\frac {a \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{6 c}-\frac {2 a \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{3 c}\right )+24 b^{2} c^{2} \left (\frac {x \sqrt {c \,x^{2}+b x +a}}{2 c}-\frac {3 b \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}-\frac {a \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )\right )\) | \(722\) |
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Time = 0.28 (sec) , antiderivative size = 313, normalized size of antiderivative = 2.68 \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\left [\frac {3 \, {\left (b^{4} - 8 \, a b^{2} c + 16 \, a^{2} c^{2}\right )} \sqrt {c} d^{4} \log \left (-8 \, c^{2} x^{2} - 8 \, b c x - b^{2} - 4 \, \sqrt {c x^{2} + b x + a} {\left (2 \, c x + b\right )} \sqrt {c} - 4 \, a c\right ) + 4 \, {\left (16 \, c^{4} d^{4} x^{3} + 24 \, b c^{3} d^{4} x^{2} + 6 \, {\left (3 \, b^{2} c^{2} - 4 \, a c^{3}\right )} d^{4} x + {\left (5 \, b^{3} c - 12 \, a b c^{2}\right )} d^{4}\right )} \sqrt {c x^{2} + b x + a}}{16 \, c}, -\frac {3 \, {\left (b^{4} - 8 \, a b^{2} c + 16 \, a^{2} c^{2}\right )} \sqrt {-c} d^{4} \arctan \left (\frac {\sqrt {c x^{2} + b x + a} {\left (2 \, c x + b\right )} \sqrt {-c}}{2 \, {\left (c^{2} x^{2} + b c x + a c\right )}}\right ) - 2 \, {\left (16 \, c^{4} d^{4} x^{3} + 24 \, b c^{3} d^{4} x^{2} + 6 \, {\left (3 \, b^{2} c^{2} - 4 \, a c^{3}\right )} d^{4} x + {\left (5 \, b^{3} c - 12 \, a b c^{2}\right )} d^{4}\right )} \sqrt {c x^{2} + b x + a}}{8 \, c}\right ] \]
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Leaf count of result is larger than twice the leaf count of optimal. 549 vs. \(2 (110) = 220\).
Time = 0.75 (sec) , antiderivative size = 549, normalized size of antiderivative = 4.69 \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\begin {cases} \sqrt {a + b x + c x^{2}} \cdot \left (6 b c^{2} d^{4} x^{2} + 4 c^{3} d^{4} x^{3} + \frac {x \left (- 12 a c^{3} d^{4} + 9 b^{2} c^{2} d^{4}\right )}{2 c} + \frac {- 12 a b c^{2} d^{4} + 8 b^{3} c d^{4} - \frac {3 b \left (- 12 a c^{3} d^{4} + 9 b^{2} c^{2} d^{4}\right )}{4 c}}{c}\right ) + \left (- \frac {a \left (- 12 a c^{3} d^{4} + 9 b^{2} c^{2} d^{4}\right )}{2 c} + b^{4} d^{4} - \frac {b \left (- 12 a b c^{2} d^{4} + 8 b^{3} c d^{4} - \frac {3 b \left (- 12 a c^{3} d^{4} + 9 b^{2} c^{2} d^{4}\right )}{4 c}\right )}{2 c}\right ) \left (\begin {cases} \frac {\log {\left (b + 2 \sqrt {c} \sqrt {a + b x + c x^{2}} + 2 c x \right )}}{\sqrt {c}} & \text {for}\: a - \frac {b^{2}}{4 c} \neq 0 \\\frac {\left (\frac {b}{2 c} + x\right ) \log {\left (\frac {b}{2 c} + x \right )}}{\sqrt {c \left (\frac {b}{2 c} + x\right )^{2}}} & \text {otherwise} \end {cases}\right ) & \text {for}\: c \neq 0 \\\frac {2 \cdot \left (\frac {16 c^{4} d^{4} \left (a + b x\right )^{\frac {9}{2}}}{9 b^{4}} + \frac {\left (a + b x\right )^{\frac {7}{2}} \left (- 64 a c^{4} d^{4} + 32 b^{2} c^{3} d^{4}\right )}{7 b^{4}} + \frac {\left (a + b x\right )^{\frac {5}{2}} \cdot \left (96 a^{2} c^{4} d^{4} - 96 a b^{2} c^{3} d^{4} + 24 b^{4} c^{2} d^{4}\right )}{5 b^{4}} + \frac {\left (a + b x\right )^{\frac {3}{2}} \left (- 64 a^{3} c^{4} d^{4} + 96 a^{2} b^{2} c^{3} d^{4} - 48 a b^{4} c^{2} d^{4} + 8 b^{6} c d^{4}\right )}{3 b^{4}} + \frac {\sqrt {a + b x} \left (16 a^{4} c^{4} d^{4} - 32 a^{3} b^{2} c^{3} d^{4} + 24 a^{2} b^{4} c^{2} d^{4} - 8 a b^{6} c d^{4} + b^{8} d^{4}\right )}{b^{4}}\right )}{b} & \text {for}\: b \neq 0 \\\frac {16 c^{4} d^{4} x^{5}}{5 \sqrt {a}} & \text {otherwise} \end {cases} \]
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Exception generated. \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\text {Exception raised: ValueError} \]
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Time = 0.29 (sec) , antiderivative size = 157, normalized size of antiderivative = 1.34 \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\frac {1}{4} \, \sqrt {c x^{2} + b x + a} {\left (2 \, {\left (4 \, {\left (2 \, c^{3} d^{4} x + 3 \, b c^{2} d^{4}\right )} x + \frac {3 \, {\left (3 \, b^{2} c^{4} d^{4} - 4 \, a c^{5} d^{4}\right )}}{c^{3}}\right )} x + \frac {5 \, b^{3} c^{3} d^{4} - 12 \, a b c^{4} d^{4}}{c^{3}}\right )} - \frac {3 \, {\left (b^{4} d^{4} - 8 \, a b^{2} c d^{4} + 16 \, a^{2} c^{2} d^{4}\right )} \log \left ({\left | 2 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b x + a}\right )} \sqrt {c} + b \right |}\right )}{8 \, \sqrt {c}} \]
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Timed out. \[ \int \frac {(b d+2 c d x)^4}{\sqrt {a+b x+c x^2}} \, dx=\int \frac {{\left (b\,d+2\,c\,d\,x\right )}^4}{\sqrt {c\,x^2+b\,x+a}} \,d x \]
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