Optimal. Leaf size=37 \[ -\frac {\sqrt {9+4 x^2}}{27 x^3}+\frac {8 \sqrt {9+4 x^2}}{243 x} \]
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Rubi [A]
time = 0.01, antiderivative size = 37, normalized size of antiderivative = 1.00, number of steps
used = 2, number of rules used = 2, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {277, 270}
\begin {gather*} \frac {8 \sqrt {4 x^2+9}}{243 x}-\frac {\sqrt {4 x^2+9}}{27 x^3} \end {gather*}
Antiderivative was successfully verified.
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Rule 270
Rule 277
Rubi steps
\begin {align*} \int \frac {1}{x^4 \sqrt {9+4 x^2}} \, dx &=-\frac {\sqrt {9+4 x^2}}{27 x^3}-\frac {8}{27} \int \frac {1}{x^2 \sqrt {9+4 x^2}} \, dx\\ &=-\frac {\sqrt {9+4 x^2}}{27 x^3}+\frac {8 \sqrt {9+4 x^2}}{243 x}\\ \end {align*}
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Mathematica [A]
time = 0.03, size = 25, normalized size = 0.68 \begin {gather*} \frac {\sqrt {9+4 x^2} \left (-9+8 x^2\right )}{243 x^3} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.05, size = 30, normalized size = 0.81
method | result | size |
gosper | \(\frac {\sqrt {4 x^{2}+9}\, \left (8 x^{2}-9\right )}{243 x^{3}}\) | \(22\) |
trager | \(\frac {\sqrt {4 x^{2}+9}\, \left (8 x^{2}-9\right )}{243 x^{3}}\) | \(22\) |
meijerg | \(-\frac {\left (1-\frac {8 x^{2}}{9}\right ) \sqrt {1+\frac {4 x^{2}}{9}}}{9 x^{3}}\) | \(22\) |
risch | \(\frac {32 x^{4}+36 x^{2}-81}{243 x^{3} \sqrt {4 x^{2}+9}}\) | \(27\) |
default | \(-\frac {\sqrt {4 x^{2}+9}}{27 x^{3}}+\frac {8 \sqrt {4 x^{2}+9}}{243 x}\) | \(30\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.63, size = 29, normalized size = 0.78 \begin {gather*} \frac {8 \, \sqrt {4 \, x^{2} + 9}}{243 \, x} - \frac {\sqrt {4 \, x^{2} + 9}}{27 \, x^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 1.39, size = 28, normalized size = 0.76 \begin {gather*} \frac {16 \, x^{3} + {\left (8 \, x^{2} - 9\right )} \sqrt {4 \, x^{2} + 9}}{243 \, x^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.64, size = 32, normalized size = 0.86 \begin {gather*} \frac {16 \sqrt {1 + \frac {9}{4 x^{2}}}}{243} - \frac {2 \sqrt {1 + \frac {9}{4 x^{2}}}}{27 x^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 1.17, size = 42, normalized size = 1.14 \begin {gather*} \frac {32 \, {\left ({\left (2 \, x - \sqrt {4 \, x^{2} + 9}\right )}^{2} - 3\right )}}{{\left ({\left (2 \, x - \sqrt {4 \, x^{2} + 9}\right )}^{2} - 9\right )}^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.02, size = 19, normalized size = 0.51 \begin {gather*} \sqrt {x^2+\frac {9}{4}}\,\left (\frac {16}{243\,x}-\frac {2}{27\,x^3}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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