Integrand size = 15, antiderivative size = 27 \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {1}{2} e^x \sqrt {1+e^{2 x}}+\frac {\text {arcsinh}\left (e^x\right )}{2} \]
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Time = 0.01 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {2281, 201, 221} \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {\text {arcsinh}\left (e^x\right )}{2}+\frac {1}{2} e^x \sqrt {e^{2 x}+1} \]
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Rule 201
Rule 221
Rule 2281
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int \sqrt {1+x^2} \, dx,x,e^x\right ) \\ & = \frac {1}{2} e^x \sqrt {1+e^{2 x}}+\frac {1}{2} \text {Subst}\left (\int \frac {1}{\sqrt {1+x^2}} \, dx,x,e^x\right ) \\ & = \frac {1}{2} e^x \sqrt {1+e^{2 x}}+\frac {1}{2} \sinh ^{-1}\left (e^x\right ) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.52 \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {1}{2} e^x \sqrt {1+e^{2 x}}-\frac {1}{2} \log \left (-e^x+\sqrt {1+e^{2 x}}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.70
method | result | size |
default | \(\frac {\operatorname {arcsinh}\left ({\mathrm e}^{x}\right )}{2}+\frac {{\mathrm e}^{x} \sqrt {1+{\mathrm e}^{2 x}}}{2}\) | \(19\) |
risch | \(\frac {\operatorname {arcsinh}\left ({\mathrm e}^{x}\right )}{2}+\frac {{\mathrm e}^{x} \sqrt {1+{\mathrm e}^{2 x}}}{2}\) | \(19\) |
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Time = 0.30 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.07 \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {1}{2} \, \sqrt {e^{\left (2 \, x\right )} + 1} e^{x} - \frac {1}{2} \, \log \left (\sqrt {e^{\left (2 \, x\right )} + 1} - e^{x}\right ) \]
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Time = 0.28 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.74 \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {\sqrt {e^{2 x} + 1} e^{x}}{2} + \frac {\operatorname {asinh}{\left (e^{x} \right )}}{2} \]
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none
Time = 0.28 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.67 \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {1}{2} \, \sqrt {e^{\left (2 \, x\right )} + 1} e^{x} + \frac {1}{2} \, \operatorname {arsinh}\left (e^{x}\right ) \]
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Time = 0.32 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.07 \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {1}{2} \, \sqrt {e^{\left (2 \, x\right )} + 1} e^{x} - \frac {1}{2} \, \log \left (\sqrt {e^{\left (2 \, x\right )} + 1} - e^{x}\right ) \]
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Time = 0.25 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.67 \[ \int e^x \sqrt {1+e^{2 x}} \, dx=\frac {\mathrm {asinh}\left ({\mathrm {e}}^x\right )}{2}+\frac {{\mathrm {e}}^x\,\sqrt {{\mathrm {e}}^{2\,x}+1}}{2} \]
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