Integrand size = 19, antiderivative size = 54 \[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=-\frac {\text {arctanh}\left (\frac {a e-c d x}{\sqrt {c d^2+a e^2} \sqrt {a+c x^2}}\right )}{\sqrt {c d^2+a e^2}} \]
[Out]
Time = 0.01 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.105, Rules used = {739, 212} \[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=-\frac {\text {arctanh}\left (\frac {a e-c d x}{\sqrt {a+c x^2} \sqrt {a e^2+c d^2}}\right )}{\sqrt {a e^2+c d^2}} \]
[In]
[Out]
Rule 212
Rule 739
Rubi steps \begin{align*} \text {integral}& = -\text {Subst}\left (\int \frac {1}{c d^2+a e^2-x^2} \, dx,x,\frac {a e-c d x}{\sqrt {a+c x^2}}\right ) \\ & = -\frac {\tanh ^{-1}\left (\frac {a e-c d x}{\sqrt {c d^2+a e^2} \sqrt {a+c x^2}}\right )}{\sqrt {c d^2+a e^2}} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 64, normalized size of antiderivative = 1.19 \[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=-\frac {2 \arctan \left (\frac {\sqrt {c} (d+e x)-e \sqrt {a+c x^2}}{\sqrt {-c d^2-a e^2}}\right )}{\sqrt {-c d^2-a e^2}} \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. \(126\) vs. \(2(48)=96\).
Time = 0.38 (sec) , antiderivative size = 127, normalized size of antiderivative = 2.35
method | result | size |
default | \(-\frac {\ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {\left (x +\frac {d}{e}\right )^{2} c -\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{e \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}\) | \(127\) |
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 99 vs. \(2 (49) = 98\).
Time = 0.34 (sec) , antiderivative size = 211, normalized size of antiderivative = 3.91 \[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=\left [\frac {\log \left (\frac {2 \, a c d e x - a c d^{2} - 2 \, a^{2} e^{2} - {\left (2 \, c^{2} d^{2} + a c e^{2}\right )} x^{2} - 2 \, \sqrt {c d^{2} + a e^{2}} {\left (c d x - a e\right )} \sqrt {c x^{2} + a}}{e^{2} x^{2} + 2 \, d e x + d^{2}}\right )}{2 \, \sqrt {c d^{2} + a e^{2}}}, -\frac {\sqrt {-c d^{2} - a e^{2}} \arctan \left (\frac {\sqrt {-c d^{2} - a e^{2}} {\left (c d x - a e\right )} \sqrt {c x^{2} + a}}{a c d^{2} + a^{2} e^{2} + {\left (c^{2} d^{2} + a c e^{2}\right )} x^{2}}\right )}{c d^{2} + a e^{2}}\right ] \]
[In]
[Out]
\[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=\int \frac {1}{\sqrt {a + c x^{2}} \left (d + e x\right )}\, dx \]
[In]
[Out]
none
Time = 0.20 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.11 \[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=\frac {\operatorname {arsinh}\left (\frac {c d x}{e \sqrt {\frac {a c}{e^{2}}} {\left | e x + d \right |}} - \frac {a}{\sqrt {\frac {a c}{e^{2}}} {\left | e x + d \right |}}\right )}{\sqrt {a + \frac {c d^{2}}{e^{2}}} e} \]
[In]
[Out]
none
Time = 0.28 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.11 \[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=\frac {2 \, \arctan \left (-\frac {{\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )} e + \sqrt {c} d}{\sqrt {-c d^{2} - a e^{2}}}\right )}{\sqrt {-c d^{2} - a e^{2}}} \]
[In]
[Out]
Timed out. \[ \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx=\int \frac {1}{\sqrt {c\,x^2+a}\,\left (d+e\,x\right )} \,d x \]
[In]
[Out]