Optimal. Leaf size=12 \[ -\sin ^{-1}\left (\frac {1}{4} (-1-x)\right ) \]
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Rubi [A]
time = 0.01, antiderivative size = 12, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.231, Rules used = {1976, 633, 222}
\begin {gather*} -\text {ArcSin}\left (\frac {1}{4} (-x-1)\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 222
Rule 633
Rule 1976
Rubi steps
\begin {align*} \int \frac {1}{\sqrt {(3-x) (5+x)}} \, dx &=\int \frac {1}{\sqrt {15-2 x-x^2}} \, dx\\ &=-\left (\frac {1}{8} \text {Subst}\left (\int \frac {1}{\sqrt {1-\frac {x^2}{64}}} \, dx,x,-2-2 x\right )\right )\\ &=-\sin ^{-1}\left (\frac {1}{4} (-1-x)\right )\\ \end {align*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(44\) vs. \(2(12)=24\).
time = 0.00, size = 44, normalized size = 3.67 \begin {gather*} \frac {2 \sqrt {-3+x} \sqrt {5+x} \tanh ^{-1}\left (\frac {\sqrt {5+x}}{\sqrt {-3+x}}\right )}{\sqrt {-((-3+x) (5+x))}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.57, size = 7, normalized size = 0.58
method | result | size |
default | \(\arcsin \left (\frac {1}{4}+\frac {x}{4}\right )\) | \(7\) |
trager | \(\RootOf \left (\textit {\_Z}^{2}+1\right ) \ln \left (-x \RootOf \left (\textit {\_Z}^{2}+1\right )-\RootOf \left (\textit {\_Z}^{2}+1\right )+\sqrt {-x^{2}-2 x +15}\right )\) | \(39\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.51, size = 8, normalized size = 0.67 \begin {gather*} -\arcsin \left (-\frac {1}{4} \, x - \frac {1}{4}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 29 vs.
\(2 (6) = 12\).
time = 0.37, size = 29, normalized size = 2.42 \begin {gather*} -\arctan \left (\frac {\sqrt {-x^{2} - 2 \, x + 15} {\left (x + 1\right )}}{x^{2} + 2 \, x - 15}\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 \frac {1}{\sqrt {\left (3 - x\right ) \left (x + 5\right )}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 26 vs.
\(2 (6) = 12\).
time = 3.17, size = 26, normalized size = 2.17 \begin {gather*} \frac {1}{2} \, \sqrt {-x^{2} - 2 \, x + 15} {\left (x + 1\right )} + 8 \, \arcsin \left (\frac {1}{4} \, x + \frac {1}{4}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 3.37, size = 6, normalized size = 0.50 \begin {gather*} \mathrm {asin}\left (\frac {x}{4}+\frac {1}{4}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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