Integrand size = 26, antiderivative size = 41 \[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=\frac {x^8}{8 a \left (a+b x^2\right )^3 \sqrt {a^2+2 a b x^2+b^2 x^4}} \]
[Out]
Time = 0.03 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.115, Rules used = {1125, 660, 37} \[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=\frac {x^8}{8 a \left (a+b x^2\right )^3 \sqrt {a^2+2 a b x^2+b^2 x^4}} \]
[In]
[Out]
Rule 37
Rule 660
Rule 1125
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {x^3}{\left (a^2+2 a b x+b^2 x^2\right )^{5/2}} \, dx,x,x^2\right ) \\ & = \frac {\left (b^4 \left (a b+b^2 x^2\right )\right ) \text {Subst}\left (\int \frac {x^3}{\left (a b+b^2 x\right )^5} \, dx,x,x^2\right )}{2 \sqrt {a^2+2 a b x^2+b^2 x^4}} \\ & = \frac {x^8}{8 a \left (a+b x^2\right )^3 \sqrt {a^2+2 a b x^2+b^2 x^4}} \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(161\) vs. \(2(41)=82\).
Time = 0.50 (sec) , antiderivative size = 161, normalized size of antiderivative = 3.93 \[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=-\frac {x^8 \left (a^5+a b^4 x^8-a^3 \sqrt {a^2} \sqrt {\left (a+b x^2\right )^2}-a \sqrt {a^2} b^2 x^4 \sqrt {\left (a+b x^2\right )^2}+\sqrt {a^2} b x^2 \sqrt {\left (a+b x^2\right )^2} \left (a^2+b^2 x^4\right )\right )}{8 a^5 \left (a+b x^2\right )^3 \left (\sqrt {a^2} b x^2+a \left (\sqrt {a^2}-\sqrt {\left (a+b x^2\right )^2}\right )\right )} \]
[In]
[Out]
Result contains higher order function than in optimal. Order 9 vs. order 2.
Time = 0.08 (sec) , antiderivative size = 50, normalized size of antiderivative = 1.22
method | result | size |
pseudoelliptic | \(-\frac {\left (2 b \,x^{2}+a \right ) \left (2 b^{2} x^{4}+2 a b \,x^{2}+a^{2}\right ) \operatorname {csgn}\left (b \,x^{2}+a \right )}{8 \left (b \,x^{2}+a \right )^{4} b^{4}}\) | \(50\) |
gosper | \(-\frac {\left (b \,x^{2}+a \right ) \left (4 b^{3} x^{6}+6 b^{2} x^{4} a +4 a^{2} b \,x^{2}+a^{3}\right )}{8 b^{4} {\left (\left (b \,x^{2}+a \right )^{2}\right )}^{\frac {5}{2}}}\) | \(54\) |
default | \(-\frac {\left (b \,x^{2}+a \right ) \left (4 b^{3} x^{6}+6 b^{2} x^{4} a +4 a^{2} b \,x^{2}+a^{3}\right )}{8 b^{4} {\left (\left (b \,x^{2}+a \right )^{2}\right )}^{\frac {5}{2}}}\) | \(54\) |
risch | \(\frac {\sqrt {\left (b \,x^{2}+a \right )^{2}}\, \left (-\frac {x^{6}}{2 b}-\frac {3 a \,x^{4}}{4 b^{2}}-\frac {a^{2} x^{2}}{2 b^{3}}-\frac {a^{3}}{8 b^{4}}\right )}{\left (b \,x^{2}+a \right )^{5}}\) | \(59\) |
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 80 vs. \(2 (28) = 56\).
Time = 0.25 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.95 \[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=-\frac {4 \, b^{3} x^{6} + 6 \, a b^{2} x^{4} + 4 \, a^{2} b x^{2} + a^{3}}{8 \, {\left (b^{8} x^{8} + 4 \, a b^{7} x^{6} + 6 \, a^{2} b^{6} x^{4} + 4 \, a^{3} b^{5} x^{2} + a^{4} b^{4}\right )}} \]
[In]
[Out]
\[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=\int \frac {x^{7}}{\left (\left (a + b x^{2}\right )^{2}\right )^{\frac {5}{2}}}\, dx \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 80 vs. \(2 (28) = 56\).
Time = 0.20 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.95 \[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=-\frac {4 \, b^{3} x^{6} + 6 \, a b^{2} x^{4} + 4 \, a^{2} b x^{2} + a^{3}}{8 \, {\left (b^{8} x^{8} + 4 \, a b^{7} x^{6} + 6 \, a^{2} b^{6} x^{4} + 4 \, a^{3} b^{5} x^{2} + a^{4} b^{4}\right )}} \]
[In]
[Out]
none
Time = 0.27 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.32 \[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=-\frac {4 \, b^{3} x^{6} + 6 \, a b^{2} x^{4} + 4 \, a^{2} b x^{2} + a^{3}}{8 \, {\left (b x^{2} + a\right )}^{4} b^{4} \mathrm {sgn}\left (b x^{2} + a\right )} \]
[In]
[Out]
Time = 13.28 (sec) , antiderivative size = 144, normalized size of antiderivative = 3.51 \[ \int \frac {x^7}{\left (a^2+2 a b x^2+b^2 x^4\right )^{5/2}} \, dx=\frac {a^3\,\sqrt {a^2+2\,a\,b\,x^2+b^2\,x^4}}{8\,b^4\,{\left (b\,x^2+a\right )}^5}-\frac {a^2\,\sqrt {a^2+2\,a\,b\,x^2+b^2\,x^4}}{2\,b^4\,{\left (b\,x^2+a\right )}^4}-\frac {\sqrt {a^2+2\,a\,b\,x^2+b^2\,x^4}}{2\,b^4\,{\left (b\,x^2+a\right )}^2}+\frac {3\,a\,\sqrt {a^2+2\,a\,b\,x^2+b^2\,x^4}}{4\,b^4\,{\left (b\,x^2+a\right )}^3} \]
[In]
[Out]