Integrand size = 13, antiderivative size = 78 \[ \int \sqrt {x+\sqrt {1+x}} \, dx=\frac {1}{6} \sqrt {1+x} \sqrt {x+\sqrt {1+x}}+\frac {1}{12} (-3+8 x) \sqrt {x+\sqrt {1+x}}-\frac {5}{8} \log \left (1+2 \sqrt {1+x}-2 \sqrt {x+\sqrt {1+x}}\right ) \]
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Time = 0.05 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.01, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {654, 626, 635, 212} \[ \int \sqrt {x+\sqrt {1+x}} \, dx=\frac {5}{8} \text {arctanh}\left (\frac {2 \sqrt {x+1}+1}{2 \sqrt {x+\sqrt {x+1}}}\right )+\frac {2}{3} \left (x+\sqrt {x+1}\right )^{3/2}-\frac {1}{4} \left (2 \sqrt {x+1}+1\right ) \sqrt {x+\sqrt {x+1}} \]
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Rule 212
Rule 626
Rule 635
Rule 654
Rubi steps \begin{align*} \text {integral}& = 2 \text {Subst}\left (\int x \sqrt {-1+x+x^2} \, dx,x,\sqrt {1+x}\right ) \\ & = \frac {2}{3} \left (x+\sqrt {1+x}\right )^{3/2}-\text {Subst}\left (\int \sqrt {-1+x+x^2} \, dx,x,\sqrt {1+x}\right ) \\ & = \frac {2}{3} \left (x+\sqrt {1+x}\right )^{3/2}-\frac {1}{4} \sqrt {x+\sqrt {1+x}} \left (1+2 \sqrt {1+x}\right )+\frac {5}{8} \text {Subst}\left (\int \frac {1}{\sqrt {-1+x+x^2}} \, dx,x,\sqrt {1+x}\right ) \\ & = \frac {2}{3} \left (x+\sqrt {1+x}\right )^{3/2}-\frac {1}{4} \sqrt {x+\sqrt {1+x}} \left (1+2 \sqrt {1+x}\right )+\frac {5}{4} \text {Subst}\left (\int \frac {1}{4-x^2} \, dx,x,\frac {1+2 \sqrt {1+x}}{\sqrt {x+\sqrt {1+x}}}\right ) \\ & = \frac {2}{3} \left (x+\sqrt {1+x}\right )^{3/2}-\frac {1}{4} \sqrt {x+\sqrt {1+x}} \left (1+2 \sqrt {1+x}\right )+\frac {5}{8} \text {arctanh}\left (\frac {1+2 \sqrt {1+x}}{2 \sqrt {x+\sqrt {1+x}}}\right ) \\ \end{align*}
Time = 0.09 (sec) , antiderivative size = 65, normalized size of antiderivative = 0.83 \[ \int \sqrt {x+\sqrt {1+x}} \, dx=\frac {1}{12} \sqrt {x+\sqrt {1+x}} \left (-11+2 \sqrt {1+x}+8 (1+x)\right )-\frac {5}{8} \log \left (-1-2 \sqrt {1+x}+2 \sqrt {x+\sqrt {1+x}}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.67
method | result | size |
derivativedivides | \(\frac {2 \left (x +\sqrt {1+x}\right )^{\frac {3}{2}}}{3}-\frac {\left (2 \sqrt {1+x}+1\right ) \sqrt {x +\sqrt {1+x}}}{4}+\frac {5 \ln \left (\frac {1}{2}+\sqrt {1+x}+\sqrt {x +\sqrt {1+x}}\right )}{8}\) | \(52\) |
default | \(\frac {2 \left (x +\sqrt {1+x}\right )^{\frac {3}{2}}}{3}-\frac {\left (2 \sqrt {1+x}+1\right ) \sqrt {x +\sqrt {1+x}}}{4}+\frac {5 \ln \left (\frac {1}{2}+\sqrt {1+x}+\sqrt {x +\sqrt {1+x}}\right )}{8}\) | \(52\) |
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Time = 0.52 (sec) , antiderivative size = 59, normalized size of antiderivative = 0.76 \[ \int \sqrt {x+\sqrt {1+x}} \, dx=\frac {1}{12} \, {\left (8 \, x + 2 \, \sqrt {x + 1} - 3\right )} \sqrt {x + \sqrt {x + 1}} + \frac {5}{16} \, \log \left (4 \, \sqrt {x + \sqrt {x + 1}} {\left (2 \, \sqrt {x + 1} + 1\right )} + 8 \, x + 8 \, \sqrt {x + 1} + 5\right ) \]
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Time = 0.36 (sec) , antiderivative size = 56, normalized size of antiderivative = 0.72 \[ \int \sqrt {x+\sqrt {1+x}} \, dx=2 \sqrt {x + \sqrt {x + 1}} \left (\frac {x}{3} + \frac {\sqrt {x + 1}}{12} - \frac {1}{8}\right ) + \frac {5 \log {\left (2 \sqrt {x + 1} + 2 \sqrt {x + \sqrt {x + 1}} + 1 \right )}}{8} \]
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\[ \int \sqrt {x+\sqrt {1+x}} \, dx=\int { \sqrt {x + \sqrt {x + 1}} \,d x } \]
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Time = 0.27 (sec) , antiderivative size = 53, normalized size of antiderivative = 0.68 \[ \int \sqrt {x+\sqrt {1+x}} \, dx=\frac {1}{12} \, {\left (2 \, \sqrt {x + 1} {\left (4 \, \sqrt {x + 1} + 1\right )} - 11\right )} \sqrt {x + \sqrt {x + 1}} - \frac {5}{8} \, \log \left (-2 \, \sqrt {x + \sqrt {x + 1}} + 2 \, \sqrt {x + 1} + 1\right ) \]
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Timed out. \[ \int \sqrt {x+\sqrt {1+x}} \, dx=\int \sqrt {x+\sqrt {x+1}} \,d x \]
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