Integrand size = 21, antiderivative size = 25 \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=x+4 \sqrt {1+x}+4 \log \left (1-\sqrt {1+x}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {442, 383, 78} \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=x+4 \sqrt {x+1}+4 \log \left (1-\sqrt {x+1}\right ) \]
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Rule 78
Rule 383
Rule 442
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int \frac {1+\sqrt {x}}{-1+\sqrt {x}} \, dx,x,1+x\right ) \\ & = 2 \text {Subst}\left (\int \frac {x (1+x)}{-1+x} \, dx,x,\sqrt {1+x}\right ) \\ & = 2 \text {Subst}\left (\int \left (2+\frac {2}{-1+x}+x\right ) \, dx,x,\sqrt {1+x}\right ) \\ & = x+4 \sqrt {1+x}+4 \log \left (1-\sqrt {1+x}\right ) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.96 \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=1+x+4 \sqrt {1+x}+4 \log \left (-1+\sqrt {1+x}\right ) \]
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Time = 0.18 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.84
method | result | size |
derivativedivides | \(1+x +4 \sqrt {1+x}+4 \ln \left (-1+\sqrt {1+x}\right )\) | \(21\) |
default | \(1+x +4 \sqrt {1+x}+4 \ln \left (-1+\sqrt {1+x}\right )\) | \(21\) |
trager | \(-1+x +4 \sqrt {1+x}+2 \ln \left (2 \sqrt {1+x}-2-x \right )\) | \(26\) |
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Time = 0.23 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.76 \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=x + 4 \, \sqrt {x + 1} + 4 \, \log \left (\sqrt {x + 1} - 1\right ) \]
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Time = 0.06 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80 \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=x + 4 \sqrt {x + 1} + 4 \log {\left (\sqrt {x + 1} - 1 \right )} \]
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Time = 0.19 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80 \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=x + 4 \, \sqrt {x + 1} + 4 \, \log \left (\sqrt {x + 1} - 1\right ) + 1 \]
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Time = 0.31 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.84 \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=x + 4 \, \sqrt {x + 1} + 4 \, \log \left ({\left | \sqrt {x + 1} - 1 \right |}\right ) + 1 \]
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Time = 0.25 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.76 \[ \int \frac {1+\sqrt {1+x}}{-1+\sqrt {1+x}} \, dx=x+4\,\ln \left (\sqrt {x+1}-1\right )+4\,\sqrt {x+1} \]
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