Integrand size = 18, antiderivative size = 202 \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=\frac {\left (63 b^2-64 a c\right ) x^2 \sqrt {a+b x+c x^2}}{240 c^3}-\frac {9 b x^3 \sqrt {a+b x+c x^2}}{40 c^2}+\frac {x^4 \sqrt {a+b x+c x^2}}{5 c}+\frac {\left (945 b^4-2940 a b^2 c+1024 a^2 c^2-14 b c \left (45 b^2-92 a c\right ) x\right ) \sqrt {a+b x+c x^2}}{1920 c^5}-\frac {b \left (63 b^4-280 a b^2 c+240 a^2 c^2\right ) \text {arctanh}\left (\frac {b+2 c x}{2 \sqrt {c} \sqrt {a+b x+c x^2}}\right )}{256 c^{11/2}} \]
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Time = 0.14 (sec) , antiderivative size = 202, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.278, Rules used = {756, 846, 793, 635, 212} \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=-\frac {b \left (240 a^2 c^2-280 a b^2 c+63 b^4\right ) \text {arctanh}\left (\frac {b+2 c x}{2 \sqrt {c} \sqrt {a+b x+c x^2}}\right )}{256 c^{11/2}}+\frac {\left (1024 a^2 c^2-14 b c x \left (45 b^2-92 a c\right )-2940 a b^2 c+945 b^4\right ) \sqrt {a+b x+c x^2}}{1920 c^5}+\frac {x^2 \left (63 b^2-64 a c\right ) \sqrt {a+b x+c x^2}}{240 c^3}-\frac {9 b x^3 \sqrt {a+b x+c x^2}}{40 c^2}+\frac {x^4 \sqrt {a+b x+c x^2}}{5 c} \]
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Rule 212
Rule 635
Rule 756
Rule 793
Rule 846
Rubi steps \begin{align*} \text {integral}& = \frac {x^4 \sqrt {a+b x+c x^2}}{5 c}+\frac {\int \frac {x^3 \left (-4 a-\frac {9 b x}{2}\right )}{\sqrt {a+b x+c x^2}} \, dx}{5 c} \\ & = -\frac {9 b x^3 \sqrt {a+b x+c x^2}}{40 c^2}+\frac {x^4 \sqrt {a+b x+c x^2}}{5 c}+\frac {\int \frac {x^2 \left (\frac {27 a b}{2}+\frac {1}{4} \left (63 b^2-64 a c\right ) x\right )}{\sqrt {a+b x+c x^2}} \, dx}{20 c^2} \\ & = \frac {\left (63 b^2-64 a c\right ) x^2 \sqrt {a+b x+c x^2}}{240 c^3}-\frac {9 b x^3 \sqrt {a+b x+c x^2}}{40 c^2}+\frac {x^4 \sqrt {a+b x+c x^2}}{5 c}+\frac {\int \frac {x \left (-\frac {1}{2} a \left (63 b^2-64 a c\right )-\frac {7}{8} b \left (45 b^2-92 a c\right ) x\right )}{\sqrt {a+b x+c x^2}} \, dx}{60 c^3} \\ & = \frac {\left (63 b^2-64 a c\right ) x^2 \sqrt {a+b x+c x^2}}{240 c^3}-\frac {9 b x^3 \sqrt {a+b x+c x^2}}{40 c^2}+\frac {x^4 \sqrt {a+b x+c x^2}}{5 c}+\frac {\left (945 b^4-2940 a b^2 c+1024 a^2 c^2-14 b c \left (45 b^2-92 a c\right ) x\right ) \sqrt {a+b x+c x^2}}{1920 c^5}-\frac {\left (b \left (63 b^4-280 a b^2 c+240 a^2 c^2\right )\right ) \int \frac {1}{\sqrt {a+b x+c x^2}} \, dx}{256 c^5} \\ & = \frac {\left (63 b^2-64 a c\right ) x^2 \sqrt {a+b x+c x^2}}{240 c^3}-\frac {9 b x^3 \sqrt {a+b x+c x^2}}{40 c^2}+\frac {x^4 \sqrt {a+b x+c x^2}}{5 c}+\frac {\left (945 b^4-2940 a b^2 c+1024 a^2 c^2-14 b c \left (45 b^2-92 a c\right ) x\right ) \sqrt {a+b x+c x^2}}{1920 c^5}-\frac {\left (b \left (63 b^4-280 a b^2 c+240 a^2 c^2\right )\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 )}{128 c^5} \\ & = \frac {\left (63 b^2-64 a c\right ) x^2 \sqrt {a+b x+c x^2}}{240 c^3}-\frac {9 b x^3 \sqrt {a+b x+c x^2}}{40 c^2}+\frac {x^4 \sqrt {a+b x+c x^2}}{5 c}+\frac {\left (945 b^4-2940 a b^2 c+1024 a^2 c^2-14 b c \left (45 b^2-92 a c\right ) x\right ) \sqrt {a+b x+c x^2}}{1920 c^5}-\frac {b \left (63 b^4-280 a b^2 c+240 a^2 c^2\right ) \tanh ^{-1}\left (\frac {b+2 c x}{2 \sqrt {c} \sqrt {a+b x+c x^2}}\right )}{256 c^{11/2}} \\ \end{align*}
Time = 0.43 (sec) , antiderivative size = 153, normalized size of antiderivative = 0.76 \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=\frac {2 \sqrt {c} \sqrt {a+x (b+c x)} \left (945 b^4-630 b^3 c x+8 b c^2 x \left (161 a-54 c x^2\right )+84 b^2 c \left (-35 a+6 c x^2\right )+128 c^2 \left (8 a^2-4 a c x^2+3 c^2 x^4\right )\right )+15 \left (63 b^5-280 a b^3 c+240 a^2 b c^2\right ) \log \left (b+2 c x-2 \sqrt {c} \sqrt {a+x (b+c x)}\right )}{3840 c^{11/2}} \]
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Time = 0.35 (sec) , antiderivative size = 144, normalized size of antiderivative = 0.71
method | result | size |
risch | \(\frac {\left (384 c^{4} x^{4}-432 b \,c^{3} x^{3}-512 a \,c^{3} x^{2}+504 b^{2} c^{2} x^{2}+1288 a b \,c^{2} x -630 b^{3} c x +1024 a^{2} c^{2}-2940 a \,b^{2} c +945 b^{4}\right ) \sqrt {c \,x^{2}+b x +a}}{1920 c^{5}}-\frac {b \left (240 a^{2} c^{2}-280 a \,b^{2} c +63 b^{4}\right ) \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{256 c^{\frac {11}{2}}}\) | \(144\) |
default | \(\frac {x^{4} \sqrt {c \,x^{2}+b x +a}}{5 c}-\frac {9 b \left (\frac {x^{3} \sqrt {c \,x^{2}+b x +a}}{4 c}-\frac {7 b \left (\frac {x^{2} \sqrt {c \,x^{2}+b x +a}}{3 c}-\frac {5 b \left (\frac {x \sqrt {c \,x^{2}+b x +a}}{2 c}-\frac {3 b \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}-\frac {a \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{6 c}-\frac {2 a \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{3 c}\right )}{8 c}-\frac {3 a \left (\frac {x \sqrt {c \,x^{2}+b x +a}}{2 c}-\frac {3 b \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}-\frac {a \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}\right )}{10 c}-\frac {4 a \left (\frac {x^{2} \sqrt {c \,x^{2}+b x +a}}{3 c}-\frac {5 b \left (\frac {x \sqrt {c \,x^{2}+b x +a}}{2 c}-\frac {3 b \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{4 c}-\frac {a \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{6 c}-\frac {2 a \left (\frac {\sqrt {c \,x^{2}+b x +a}}{c}-\frac {b \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x +a}\right )}{2 c^{\frac {3}{2}}}\right )}{3 c}\right )}{5 c}\) | \(541\) |
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Time = 0.34 (sec) , antiderivative size = 347, normalized size of antiderivative = 1.72 \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=\left [\frac {15 \, {\left (63 \, b^{5} - 280 \, a b^{3} c + 240 \, a^{2} b c^{2}\right )} \sqrt {c} \log \left (-8 \, c^{2} x^{2} - 8 \, b c x - b^{2} + 4 \, \sqrt {c x^{2} + b x + a} {\left (2 \, c x + b\right )} \sqrt {c} - 4 \, a c\right ) + 4 \, {\left (384 \, c^{5} x^{4} - 432 \, b c^{4} x^{3} + 945 \, b^{4} c - 2940 \, a b^{2} c^{2} + 1024 \, a^{2} c^{3} + 8 \, {\left (63 \, b^{2} c^{3} - 64 \, a c^{4}\right )} x^{2} - 14 \, {\left (45 \, b^{3} c^{2} - 92 \, a b c^{3}\right )} x\right )} \sqrt {c x^{2} + b x + a}}{7680 \, c^{6}}, \frac {15 \, {\left (63 \, b^{5} - 280 \, a b^{3} c + 240 \, a^{2} b c^{2}\right )} \sqrt {-c} \arctan \left (\frac {\sqrt {c x^{2} + b x + a} {\left (2 \, c x + b\right )} \sqrt {-c}}{2 \, {\left (c^{2} x^{2} + b c x + a c\right )}}\right ) + 2 \, {\left (384 \, c^{5} x^{4} - 432 \, b c^{4} x^{3} + 945 \, b^{4} c - 2940 \, a b^{2} c^{2} + 1024 \, a^{2} c^{3} + 8 \, {\left (63 \, b^{2} c^{3} - 64 \, a c^{4}\right )} x^{2} - 14 \, {\left (45 \, b^{3} c^{2} - 92 \, a b c^{3}\right )} x\right )} \sqrt {c x^{2} + b x + a}}{3840 \, c^{6}}\right ] \]
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Leaf count of result is larger than twice the leaf count of optimal. 439 vs. \(2 (199) = 398\).
Time = 0.41 (sec) , antiderivative size = 439, normalized size of antiderivative = 2.17 \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=\begin {cases} \left (- \frac {a \left (\frac {27 a b}{40 c^{2}} - \frac {5 b \left (- \frac {4 a}{5 c} + \frac {63 b^{2}}{80 c^{2}}\right )}{6 c}\right )}{2 c} - \frac {b \left (- \frac {2 a \left (- \frac {4 a}{5 c} + \frac {63 b^{2}}{80 c^{2}}\right )}{3 c} - \frac {3 b \left (\frac {27 a b}{40 c^{2}} - \frac {5 b \left (- \frac {4 a}{5 c} + \frac {63 b^{2}}{80 c^{2}}\right )}{6 c}\right )}{4 c}\right )}{2 c}\right ) \left (\begin {cases} \frac {\log {\left (b + 2 \sqrt {c} \sqrt {a + b x + c x^{2}} + 2 c x \right )}}{\sqrt {c}} & \text {for}\: a - \frac {b^{2}}{4 c} \neq 0 \\\frac {\left (\frac {b}{2 c} + x\right ) \log {\left (\frac {b}{2 c} + x \right )}}{\sqrt {c \left (\frac {b}{2 c} + x\right )^{2}}} & \text {otherwise} \end {cases}\right ) + \sqrt {a + b x + c x^{2}} \left (- \frac {9 b x^{3}}{40 c^{2}} + \frac {x^{4}}{5 c} + \frac {x^{2} \left (- \frac {4 a}{5 c} + \frac {63 b^{2}}{80 c^{2}}\right )}{3 c} + \frac {x \left (\frac {27 a b}{40 c^{2}} - \frac {5 b \left (- \frac {4 a}{5 c} + \frac {63 b^{2}}{80 c^{2}}\right )}{6 c}\right )}{2 c} + \frac {- \frac {2 a \left (- \frac {4 a}{5 c} + \frac {63 b^{2}}{80 c^{2}}\right )}{3 c} - \frac {3 b \left (\frac {27 a b}{40 c^{2}} - \frac {5 b \left (- \frac {4 a}{5 c} + \frac {63 b^{2}}{80 c^{2}}\right )}{6 c}\right )}{4 c}}{c}\right ) & \text {for}\: c \neq 0 \\\frac {2 \left (- a^{5} \sqrt {a + b x} + \frac {5 a^{4} \left (a + b x\right )^{\frac {3}{2}}}{3} - 2 a^{3} \left (a + b x\right )^{\frac {5}{2}} + \frac {10 a^{2} \left (a + b x\right )^{\frac {7}{2}}}{7} - \frac {5 a \left (a + b x\right )^{\frac {9}{2}}}{9} + \frac {\left (a + b x\right )^{\frac {11}{2}}}{11}\right )}{b^{6}} & \text {for}\: b \neq 0 \\\frac {x^{6}}{6 \sqrt {a}} & \text {otherwise} \end {cases} \]
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Exception generated. \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=\text {Exception raised: ValueError} \]
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Time = 0.28 (sec) , antiderivative size = 159, normalized size of antiderivative = 0.79 \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=\frac {1}{1920} \, \sqrt {c x^{2} + b x + a} {\left (2 \, {\left (4 \, {\left (6 \, x {\left (\frac {8 \, x}{c} - \frac {9 \, b}{c^{2}}\right )} + \frac {63 \, b^{2} c^{2} - 64 \, a c^{3}}{c^{5}}\right )} x - \frac {7 \, {\left (45 \, b^{3} c - 92 \, a b c^{2}\right )}}{c^{5}}\right )} x + \frac {945 \, b^{4} - 2940 \, a b^{2} c + 1024 \, a^{2} c^{2}}{c^{5}}\right )} + \frac {{\left (63 \, b^{5} - 280 \, a b^{3} c + 240 \, a^{2} b c^{2}\right )} \log \left ({\left | 2 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b x + a}\right )} \sqrt {c} + b \right |}\right )}{256 \, c^{\frac {11}{2}}} \]
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Timed out. \[ \int \frac {x^5}{\sqrt {a+b x+c x^2}} \, dx=\int \frac {x^5}{\sqrt {c\,x^2+b\,x+a}} \,d x \]
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