Optimal. Leaf size=147 \[ -\frac {35 b^6 (b+2 c x) \sqrt {b x+c x^2}}{16384 c^4}+\frac {35 b^4 (b+2 c x) \left (b x+c x^2\right )^{3/2}}{6144 c^3}-\frac {7 b^2 (b+2 c x) \left (b x+c x^2\right )^{5/2}}{384 c^2}+\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c}+\frac {35 b^8 \tanh ^{-1}\left (\frac {\sqrt {c} x}{\sqrt {b x+c x^2}}\right )}{16384 c^{9/2}} \]
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Rubi [A]
time = 0.04, antiderivative size = 147, normalized size of antiderivative = 1.00, number of steps
used = 6, number of rules used = 3, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.231, Rules used = {626, 634, 212}
\begin {gather*} \frac {35 b^8 \tanh ^{-1}\left (\frac {\sqrt {c} x}{\sqrt {b x+c x^2}}\right )}{16384 c^{9/2}}-\frac {35 b^6 (b+2 c x) \sqrt {b x+c x^2}}{16384 c^4}+\frac {35 b^4 (b+2 c x) \left (b x+c x^2\right )^{3/2}}{6144 c^3}-\frac {7 b^2 (b+2 c x) \left (b x+c x^2\right )^{5/2}}{384 c^2}+\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c} \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 626
Rule 634
Rubi steps
\begin {align*} \int \left (b x+c x^2\right )^{7/2} \, dx &=\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c}-\frac {\left (7 b^2\right ) \int \left (b x+c x^2\right )^{5/2} \, dx}{32 c}\\ &=-\frac {7 b^2 (b+2 c x) \left (b x+c x^2\right )^{5/2}}{384 c^2}+\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c}+\frac {\left (35 b^4\right ) \int \left (b x+c x^2\right )^{3/2} \, dx}{768 c^2}\\ &=\frac {35 b^4 (b+2 c x) \left (b x+c x^2\right )^{3/2}}{6144 c^3}-\frac {7 b^2 (b+2 c x) \left (b x+c x^2\right )^{5/2}}{384 c^2}+\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c}-\frac {\left (35 b^6\right ) \int \sqrt {b x+c x^2} \, dx}{4096 c^3}\\ &=-\frac {35 b^6 (b+2 c x) \sqrt {b x+c x^2}}{16384 c^4}+\frac {35 b^4 (b+2 c x) \left (b x+c x^2\right )^{3/2}}{6144 c^3}-\frac {7 b^2 (b+2 c x) \left (b x+c x^2\right )^{5/2}}{384 c^2}+\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c}+\frac {\left (35 b^8\right ) \int \frac {1}{\sqrt {b x+c x^2}} \, dx}{32768 c^4}\\ &=-\frac {35 b^6 (b+2 c x) \sqrt {b x+c x^2}}{16384 c^4}+\frac {35 b^4 (b+2 c x) \left (b x+c x^2\right )^{3/2}}{6144 c^3}-\frac {7 b^2 (b+2 c x) \left (b x+c x^2\right )^{5/2}}{384 c^2}+\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c}+\frac {\left (35 b^8\right ) \text {Subst}\left (\int \frac {1}{1-c x^2} \, dx,x,\frac {x}{\sqrt {b x+c x^2}}\right )}{16384 c^4}\\ &=-\frac {35 b^6 (b+2 c x) \sqrt {b x+c x^2}}{16384 c^4}+\frac {35 b^4 (b+2 c x) \left (b x+c x^2\right )^{3/2}}{6144 c^3}-\frac {7 b^2 (b+2 c x) \left (b x+c x^2\right )^{5/2}}{384 c^2}+\frac {(b+2 c x) \left (b x+c x^2\right )^{7/2}}{16 c}+\frac {35 b^8 \tanh ^{-1}\left (\frac {\sqrt {c} x}{\sqrt {b x+c x^2}}\right )}{16384 c^{9/2}}\\ \end {align*}
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Mathematica [A]
time = 0.18, size = 157, normalized size = 1.07 \begin {gather*} \frac {\sqrt {x} \sqrt {b+c x} \left (\sqrt {c} \sqrt {x} \sqrt {b+c x} \left (-105 b^7+70 b^6 c x-56 b^5 c^2 x^2+48 b^4 c^3 x^3+10880 b^3 c^4 x^4+25856 b^2 c^5 x^5+21504 b c^6 x^6+6144 c^7 x^7\right )-105 b^8 \log \left (-\sqrt {c} \sqrt {x}+\sqrt {b+c x}\right )\right )}{49152 c^{9/2} \sqrt {x (b+c x)}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.40, size = 149, normalized size = 1.01
method | result | size |
risch | \(-\frac {\left (-6144 c^{7} x^{7}-21504 b \,c^{6} x^{6}-25856 b^{2} c^{5} x^{5}-10880 b^{3} c^{4} x^{4}-48 b^{4} c^{3} x^{3}+56 b^{5} c^{2} x^{2}-70 b^{6} c x +105 b^{7}\right ) x \left (c x +b \right )}{49152 c^{4} \sqrt {x \left (c x +b \right )}}+\frac {35 b^{8} \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x}\right )}{32768 c^{\frac {9}{2}}}\) | \(128\) |
default | \(\frac {\left (2 c x +b \right ) \left (c \,x^{2}+b x \right )^{\frac {7}{2}}}{16 c}-\frac {7 b^{2} \left (\frac {\left (2 c x +b \right ) \left (c \,x^{2}+b x \right )^{\frac {5}{2}}}{12 c}-\frac {5 b^{2} \left (\frac {\left (2 c x +b \right ) \left (c \,x^{2}+b x \right )^{\frac {3}{2}}}{8 c}-\frac {3 b^{2} \left (\frac {\left (2 c x +b \right ) \sqrt {c \,x^{2}+b x}}{4 c}-\frac {b^{2} \ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x}\right )}{8 c^{\frac {3}{2}}}\right )}{16 c}\right )}{24 c}\right )}{32 c}\) | \(149\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.28, size = 180, normalized size = 1.22 \begin {gather*} \frac {1}{8} \, {\left (c x^{2} + b x\right )}^{\frac {7}{2}} x - \frac {35 \, \sqrt {c x^{2} + b x} b^{6} x}{8192 \, c^{3}} + \frac {35 \, {\left (c x^{2} + b x\right )}^{\frac {3}{2}} b^{4} x}{3072 \, c^{2}} - \frac {7 \, {\left (c x^{2} + b x\right )}^{\frac {5}{2}} b^{2} x}{192 \, c} + \frac {35 \, b^{8} \log \left (2 \, c x + b + 2 \, \sqrt {c x^{2} + b x} \sqrt {c}\right )}{32768 \, c^{\frac {9}{2}}} - \frac {35 \, \sqrt {c x^{2} + b x} b^{7}}{16384 \, c^{4}} + \frac {35 \, {\left (c x^{2} + b x\right )}^{\frac {3}{2}} b^{5}}{6144 \, c^{3}} - \frac {7 \, {\left (c x^{2} + b x\right )}^{\frac {5}{2}} b^{3}}{384 \, c^{2}} + \frac {{\left (c x^{2} + b x\right )}^{\frac {7}{2}} b}{16 \, c} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 1.30, size = 258, normalized size = 1.76 \begin {gather*} \left [\frac {105 \, b^{8} \sqrt {c} \log \left (2 \, c x + b + 2 \, \sqrt {c x^{2} + b x} \sqrt {c}\right ) + 2 \, {\left (6144 \, c^{8} x^{7} + 21504 \, b c^{7} x^{6} + 25856 \, b^{2} c^{6} x^{5} + 10880 \, b^{3} c^{5} x^{4} + 48 \, b^{4} c^{4} x^{3} - 56 \, b^{5} c^{3} x^{2} + 70 \, b^{6} c^{2} x - 105 \, b^{7} c\right )} \sqrt {c x^{2} + b x}}{98304 \, c^{5}}, -\frac {105 \, b^{8} \sqrt {-c} \arctan \left (\frac {\sqrt {c x^{2} + b x} \sqrt {-c}}{c x}\right ) - {\left (6144 \, c^{8} x^{7} + 21504 \, b c^{7} x^{6} + 25856 \, b^{2} c^{6} x^{5} + 10880 \, b^{3} c^{5} x^{4} + 48 \, b^{4} c^{4} x^{3} - 56 \, b^{5} c^{3} x^{2} + 70 \, b^{6} c^{2} x - 105 \, b^{7} c\right )} \sqrt {c x^{2} + b x}}{49152 \, c^{5}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \left (b x + c x^{2}\right )^{\frac {7}{2}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 2.46, size = 132, normalized size = 0.90 \begin {gather*} -\frac {35 \, b^{8} \log \left ({\left | -2 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b x}\right )} \sqrt {c} - b \right |}\right )}{32768 \, c^{\frac {9}{2}}} - \frac {1}{49152} \, {\left (\frac {105 \, b^{7}}{c^{4}} - 2 \, {\left (\frac {35 \, b^{6}}{c^{3}} - 4 \, {\left (\frac {7 \, b^{5}}{c^{2}} - 2 \, {\left (\frac {3 \, b^{4}}{c} + 8 \, {\left (85 \, b^{3} + 2 \, {\left (101 \, b^{2} c + 12 \, {\left (2 \, c^{3} x + 7 \, b c^{2}\right )} x\right )} x\right )} x\right )} x\right )} x\right )} x\right )} \sqrt {c x^{2} + b x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.74, size = 151, normalized size = 1.03 \begin {gather*} \frac {{\left (c\,x^2+b\,x\right )}^{7/2}\,\left (\frac {b}{2}+c\,x\right )}{8\,c}-\frac {7\,b^2\,\left (\frac {{\left (c\,x^2+b\,x\right )}^{5/2}\,\left (\frac {b}{2}+c\,x\right )}{6\,c}-\frac {5\,b^2\,\left (\frac {{\left (c\,x^2+b\,x\right )}^{3/2}\,\left (\frac {b}{2}+c\,x\right )}{4\,c}-\frac {3\,b^2\,\left (\sqrt {c\,x^2+b\,x}\,\left (\frac {x}{2}+\frac {b}{4\,c}\right )-\frac {b^2\,\ln \left (\frac {\frac {b}{2}+c\,x}{\sqrt {c}}+\sqrt {c\,x^2+b\,x}\right )}{8\,c^{3/2}}\right )}{16\,c}\right )}{24\,c}\right )}{32\,c} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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