Integrand size = 21, antiderivative size = 22 \[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=\frac {2 \text {arcsinh}\left (\frac {\sqrt {-1+a+b x}}{\sqrt {2}}\right )}{b} \]
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Time = 0.01 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.095, Rules used = {65, 221} \[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=\frac {2 \text {arcsinh}\left (\frac {\sqrt {a+b x-1}}{\sqrt {2}}\right )}{b} \]
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Rule 65
Rule 221
Rubi steps \begin{align*} \text {integral}& = \frac {2 \text {Subst}\left (\int \frac {1}{\sqrt {2+x^2}} \, dx,x,\sqrt {-1+a+b x}\right )}{b} \\ & = \frac {2 \sinh ^{-1}\left (\frac {\sqrt {-1+a+b x}}{\sqrt {2}}\right )}{b} \\ \end{align*}
Time = 0.04 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.23 \[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=\frac {2 \text {arctanh}\left (\frac {\sqrt {1+a+b x}}{\sqrt {-1+a+b x}}\right )}{b} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(93\) vs. \(2(19)=38\).
Time = 1.79 (sec) , antiderivative size = 94, normalized size of antiderivative = 4.27
method | result | size |
default | \(\frac {\sqrt {\left (b x +a -1\right ) \left (b x +a +1\right )}\, \ln \left (\frac {\frac {b \left (a -1\right )}{2}+\frac {b \left (1+a \right )}{2}+b^{2} x}{\sqrt {b^{2}}}+\sqrt {b^{2} x^{2}+\left (b \left (a -1\right )+b \left (1+a \right )\right ) x +\left (a -1\right ) \left (1+a \right )}\right )}{\sqrt {b x +a -1}\, \sqrt {b x +a +1}\, \sqrt {b^{2}}}\) | \(94\) |
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none
Time = 0.22 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.41 \[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=-\frac {\log \left (-b x + \sqrt {b x + a + 1} \sqrt {b x + a - 1} - a\right )}{b} \]
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\[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=\int \frac {1}{\sqrt {a + b x - 1} \sqrt {a + b x + 1}}\, dx \]
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none
Time = 0.20 (sec) , antiderivative size = 38, normalized size of antiderivative = 1.73 \[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=\frac {\log \left (2 \, b^{2} x + 2 \, a b + 2 \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} - 1} b\right )}{b} \]
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Time = 0.29 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.14 \[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=-\frac {2 \, \log \left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}{b} \]
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Time = 1.11 (sec) , antiderivative size = 53, normalized size of antiderivative = 2.41 \[ \int \frac {1}{\sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx=-\frac {4\,\mathrm {atan}\left (\frac {b\,\left (\sqrt {a-1}-\sqrt {a+b\,x-1}\right )}{\left (\sqrt {a+1}-\sqrt {a+b\,x+1}\right )\,\sqrt {-b^2}}\right )}{\sqrt {-b^2}} \]
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