Optimal. Leaf size=149 \[ \frac {\left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) x \sqrt {c+d x^2}}{16 d^2}-\frac {b (3 b c-8 a d) x \left (c+d x^2\right )^{3/2}}{24 d^2}+\frac {b x \left (a+b x^2\right ) \left (c+d x^2\right )^{3/2}}{6 d}+\frac {c \left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) \tanh ^{-1}\left (\frac {\sqrt {d} x}{\sqrt {c+d x^2}}\right )}{16 d^{5/2}} \]
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Rubi [A]
time = 0.06, antiderivative size = 149, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.238, Rules used = {427, 396, 201,
223, 212} \begin {gather*} \frac {x \sqrt {c+d x^2} \left (8 a^2 d^2-4 a b c d+b^2 c^2\right )}{16 d^2}+\frac {c \left (8 a^2 d^2-4 a b c d+b^2 c^2\right ) \tanh ^{-1}\left (\frac {\sqrt {d} x}{\sqrt {c+d x^2}}\right )}{16 d^{5/2}}-\frac {b x \left (c+d x^2\right )^{3/2} (3 b c-8 a d)}{24 d^2}+\frac {b x \left (a+b x^2\right ) \left (c+d x^2\right )^{3/2}}{6 d} \end {gather*}
Antiderivative was successfully verified.
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Rule 201
Rule 212
Rule 223
Rule 396
Rule 427
Rubi steps
\begin {align*} \int \left (a+b x^2\right )^2 \sqrt {c+d x^2} \, dx &=\frac {b x \left (a+b x^2\right ) \left (c+d x^2\right )^{3/2}}{6 d}+\frac {\int \sqrt {c+d x^2} \left (-a (b c-6 a d)-b (3 b c-8 a d) x^2\right ) \, dx}{6 d}\\ &=-\frac {b (3 b c-8 a d) x \left (c+d x^2\right )^{3/2}}{24 d^2}+\frac {b x \left (a+b x^2\right ) \left (c+d x^2\right )^{3/2}}{6 d}+\frac {\left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) \int \sqrt {c+d x^2} \, dx}{8 d^2}\\ &=\frac {\left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) x \sqrt {c+d x^2}}{16 d^2}-\frac {b (3 b c-8 a d) x \left (c+d x^2\right )^{3/2}}{24 d^2}+\frac {b x \left (a+b x^2\right ) \left (c+d x^2\right )^{3/2}}{6 d}+\frac {\left (c \left (b^2 c^2-4 a b c d+8 a^2 d^2\right )\right ) \int \frac {1}{\sqrt {c+d x^2}} \, dx}{16 d^2}\\ &=\frac {\left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) x \sqrt {c+d x^2}}{16 d^2}-\frac {b (3 b c-8 a d) x \left (c+d x^2\right )^{3/2}}{24 d^2}+\frac {b x \left (a+b x^2\right ) \left (c+d x^2\right )^{3/2}}{6 d}+\frac {\left (c \left (b^2 c^2-4 a b c d+8 a^2 d^2\right )\right ) \text {Subst}\left (\int \frac {1}{1-d x^2} \, dx,x,\frac {x}{\sqrt {c+d x^2}}\right )}{16 d^2}\\ &=\frac {\left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) x \sqrt {c+d x^2}}{16 d^2}-\frac {b (3 b c-8 a d) x \left (c+d x^2\right )^{3/2}}{24 d^2}+\frac {b x \left (a+b x^2\right ) \left (c+d x^2\right )^{3/2}}{6 d}+\frac {c \left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) \tanh ^{-1}\left (\frac {\sqrt {d} x}{\sqrt {c+d x^2}}\right )}{16 d^{5/2}}\\ \end {align*}
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Mathematica [A]
time = 0.16, size = 121, normalized size = 0.81 \begin {gather*} \frac {\sqrt {d} x \sqrt {c+d x^2} \left (24 a^2 d^2+12 a b d \left (c+2 d x^2\right )+b^2 \left (-3 c^2+2 c d x^2+8 d^2 x^4\right )\right )-3 c \left (b^2 c^2-4 a b c d+8 a^2 d^2\right ) \log \left (-\sqrt {d} x+\sqrt {c+d x^2}\right )}{48 d^{5/2}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.09, size = 187, normalized size = 1.26
method | result | size |
risch | \(\frac {x \left (8 b^{2} x^{4} d^{2}+24 a b \,d^{2} x^{2}+2 b^{2} c d \,x^{2}+24 a^{2} d^{2}+12 a b c d -3 b^{2} c^{2}\right ) \sqrt {d \,x^{2}+c}}{48 d^{2}}+\frac {c \ln \left (x \sqrt {d}+\sqrt {d \,x^{2}+c}\right ) a^{2}}{2 \sqrt {d}}-\frac {c^{2} \ln \left (x \sqrt {d}+\sqrt {d \,x^{2}+c}\right ) a b}{4 d^{\frac {3}{2}}}+\frac {c^{3} \ln \left (x \sqrt {d}+\sqrt {d \,x^{2}+c}\right ) b^{2}}{16 d^{\frac {5}{2}}}\) | \(149\) |
default | \(b^{2} \left (\frac {x^{3} \left (d \,x^{2}+c \right )^{\frac {3}{2}}}{6 d}-\frac {c \left (\frac {x \left (d \,x^{2}+c \right )^{\frac {3}{2}}}{4 d}-\frac {c \left (\frac {x \sqrt {d \,x^{2}+c}}{2}+\frac {c \ln \left (x \sqrt {d}+\sqrt {d \,x^{2}+c}\right )}{2 \sqrt {d}}\right )}{4 d}\right )}{2 d}\right )+2 a b \left (\frac {x \left (d \,x^{2}+c \right )^{\frac {3}{2}}}{4 d}-\frac {c \left (\frac {x \sqrt {d \,x^{2}+c}}{2}+\frac {c \ln \left (x \sqrt {d}+\sqrt {d \,x^{2}+c}\right )}{2 \sqrt {d}}\right )}{4 d}\right )+a^{2} \left (\frac {x \sqrt {d \,x^{2}+c}}{2}+\frac {c \ln \left (x \sqrt {d}+\sqrt {d \,x^{2}+c}\right )}{2 \sqrt {d}}\right )\) | \(187\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.30, size = 168, normalized size = 1.13 \begin {gather*} \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} b^{2} x^{3}}{6 \, d} + \frac {1}{2} \, \sqrt {d x^{2} + c} a^{2} x - \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} b^{2} c x}{8 \, d^{2}} + \frac {\sqrt {d x^{2} + c} b^{2} c^{2} x}{16 \, d^{2}} + \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} a b x}{2 \, d} - \frac {\sqrt {d x^{2} + c} a b c x}{4 \, d} + \frac {b^{2} c^{3} \operatorname {arsinh}\left (\frac {d x}{\sqrt {c d}}\right )}{16 \, d^{\frac {5}{2}}} - \frac {a b c^{2} \operatorname {arsinh}\left (\frac {d x}{\sqrt {c d}}\right )}{4 \, d^{\frac {3}{2}}} + \frac {a^{2} c \operatorname {arsinh}\left (\frac {d x}{\sqrt {c d}}\right )}{2 \, \sqrt {d}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 1.51, size = 262, normalized size = 1.76 \begin {gather*} \left [\frac {3 \, {\left (b^{2} c^{3} - 4 \, a b c^{2} d + 8 \, a^{2} c d^{2}\right )} \sqrt {d} \log \left (-2 \, d x^{2} - 2 \, \sqrt {d x^{2} + c} \sqrt {d} x - c\right ) + 2 \, {\left (8 \, b^{2} d^{3} x^{5} + 2 \, {\left (b^{2} c d^{2} + 12 \, a b d^{3}\right )} x^{3} - 3 \, {\left (b^{2} c^{2} d - 4 \, a b c d^{2} - 8 \, a^{2} d^{3}\right )} x\right )} \sqrt {d x^{2} + c}}{96 \, d^{3}}, -\frac {3 \, {\left (b^{2} c^{3} - 4 \, a b c^{2} d + 8 \, a^{2} c d^{2}\right )} \sqrt {-d} \arctan \left (\frac {\sqrt {-d} x}{\sqrt {d x^{2} + c}}\right ) - {\left (8 \, b^{2} d^{3} x^{5} + 2 \, {\left (b^{2} c d^{2} + 12 \, a b d^{3}\right )} x^{3} - 3 \, {\left (b^{2} c^{2} d - 4 \, a b c d^{2} - 8 \, a^{2} d^{3}\right )} x\right )} \sqrt {d x^{2} + c}}{48 \, d^{3}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 291 vs.
\(2 (143) = 286\).
time = 8.41, size = 291, normalized size = 1.95 \begin {gather*} \frac {a^{2} \sqrt {c} x \sqrt {1 + \frac {d x^{2}}{c}}}{2} + \frac {a^{2} c \operatorname {asinh}{\left (\frac {\sqrt {d} x}{\sqrt {c}} \right )}}{2 \sqrt {d}} + \frac {a b c^{\frac {3}{2}} x}{4 d \sqrt {1 + \frac {d x^{2}}{c}}} + \frac {3 a b \sqrt {c} x^{3}}{4 \sqrt {1 + \frac {d x^{2}}{c}}} - \frac {a b c^{2} \operatorname {asinh}{\left (\frac {\sqrt {d} x}{\sqrt {c}} \right )}}{4 d^{\frac {3}{2}}} + \frac {a b d x^{5}}{2 \sqrt {c} \sqrt {1 + \frac {d x^{2}}{c}}} - \frac {b^{2} c^{\frac {5}{2}} x}{16 d^{2} \sqrt {1 + \frac {d x^{2}}{c}}} - \frac {b^{2} c^{\frac {3}{2}} x^{3}}{48 d \sqrt {1 + \frac {d x^{2}}{c}}} + \frac {5 b^{2} \sqrt {c} x^{5}}{24 \sqrt {1 + \frac {d x^{2}}{c}}} + \frac {b^{2} c^{3} \operatorname {asinh}{\left (\frac {\sqrt {d} x}{\sqrt {c}} \right )}}{16 d^{\frac {5}{2}}} + \frac {b^{2} d x^{7}}{6 \sqrt {c} \sqrt {1 + \frac {d x^{2}}{c}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 1.40, size = 128, normalized size = 0.86 \begin {gather*} \frac {1}{48} \, {\left (2 \, {\left (4 \, b^{2} x^{2} + \frac {b^{2} c d^{3} + 12 \, a b d^{4}}{d^{4}}\right )} x^{2} - \frac {3 \, {\left (b^{2} c^{2} d^{2} - 4 \, a b c d^{3} - 8 \, a^{2} d^{4}\right )}}{d^{4}}\right )} \sqrt {d x^{2} + c} x - \frac {{\left (b^{2} c^{3} - 4 \, a b c^{2} d + 8 \, a^{2} c d^{2}\right )} \log \left ({\left | -\sqrt {d} x + \sqrt {d x^{2} + c} \right |}\right )}{16 \, d^{\frac {5}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int {\left (b\,x^2+a\right )}^2\,\sqrt {d\,x^2+c} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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