Integrand size = 24, antiderivative size = 237 \[ \int \frac {1}{\left (7+5 x^2\right )^3 \sqrt {2+3 x^2+x^4}} \, dx=\frac {65 x \left (2+x^2\right )}{4704 \sqrt {2+3 x^2+x^4}}-\frac {25 x \sqrt {2+3 x^2+x^4}}{168 \left (7+5 x^2\right )^2}-\frac {325 x \sqrt {2+3 x^2+x^4}}{4704 \left (7+5 x^2\right )}-\frac {65 \left (1+x^2\right ) \sqrt {\frac {2+x^2}{1+x^2}} E\left (\arctan (x)\left |\frac {1}{2}\right .\right )}{2352 \sqrt {2} \sqrt {2+3 x^2+x^4}}+\frac {631 \left (1+x^2\right ) \sqrt {\frac {2+x^2}{1+x^2}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{9408 \sqrt {2} \sqrt {2+3 x^2+x^4}}-\frac {2525 \left (2+x^2\right ) \operatorname {EllipticPi}\left (\frac {2}{7},\arctan (x),\frac {1}{2}\right )}{65856 \sqrt {2} \sqrt {\frac {2+x^2}{1+x^2}} \sqrt {2+3 x^2+x^4}} \]
65/4704*x*(x^2+2)/(x^4+3*x^2+2)^(1/2)-2525/131712*(x^2+2)*(1/(x^2+1))^(1/2 )*(x^2+1)^(1/2)*EllipticPi(x/(x^2+1)^(1/2),2/7,1/2*2^(1/2))*2^(1/2)/((x^2+ 2)/(x^2+1))^(1/2)/(x^4+3*x^2+2)^(1/2)-65/4704*(x^2+1)^(3/2)*(1/(x^2+1))^(1 /2)*EllipticE(x/(x^2+1)^(1/2),1/2*2^(1/2))*2^(1/2)*((x^2+2)/(x^2+1))^(1/2) /(x^4+3*x^2+2)^(1/2)+631/18816*(x^2+1)^(3/2)*(1/(x^2+1))^(1/2)*EllipticF(x /(x^2+1)^(1/2),1/2*2^(1/2))*2^(1/2)*((x^2+2)/(x^2+1))^(1/2)/(x^4+3*x^2+2)^ (1/2)-25/168*x*(x^4+3*x^2+2)^(1/2)/(5*x^2+7)^2-325/4704*x*(x^4+3*x^2+2)^(1 /2)/(5*x^2+7)
Result contains complex when optimal does not.
Time = 10.38 (sec) , antiderivative size = 186, normalized size of antiderivative = 0.78 \[ \int \frac {1}{\left (7+5 x^2\right )^3 \sqrt {2+3 x^2+x^4}} \, dx=\frac {-175 x \left (238+487 x^2+314 x^4+65 x^6\right )-455 i \sqrt {1+x^2} \sqrt {2+x^2} \left (7+5 x^2\right )^2 E\left (\left .i \text {arcsinh}\left (\frac {x}{\sqrt {2}}\right )\right |2\right )+14 i \sqrt {1+x^2} \sqrt {2+x^2} \left (7+5 x^2\right )^2 \operatorname {EllipticF}\left (i \text {arcsinh}\left (\frac {x}{\sqrt {2}}\right ),2\right )-505 i \sqrt {1+x^2} \sqrt {2+x^2} \left (7+5 x^2\right )^2 \operatorname {EllipticPi}\left (\frac {10}{7},i \text {arcsinh}\left (\frac {x}{\sqrt {2}}\right ),2\right )}{32928 \left (7+5 x^2\right )^2 \sqrt {2+3 x^2+x^4}} \]
(-175*x*(238 + 487*x^2 + 314*x^4 + 65*x^6) - (455*I)*Sqrt[1 + x^2]*Sqrt[2 + x^2]*(7 + 5*x^2)^2*EllipticE[I*ArcSinh[x/Sqrt[2]], 2] + (14*I)*Sqrt[1 + x^2]*Sqrt[2 + x^2]*(7 + 5*x^2)^2*EllipticF[I*ArcSinh[x/Sqrt[2]], 2] - (505 *I)*Sqrt[1 + x^2]*Sqrt[2 + x^2]*(7 + 5*x^2)^2*EllipticPi[10/7, I*ArcSinh[x /Sqrt[2]], 2])/(32928*(7 + 5*x^2)^2*Sqrt[2 + 3*x^2 + x^4])
Time = 0.72 (sec) , antiderivative size = 297, normalized size of antiderivative = 1.25, number of steps used = 13, number of rules used = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.542, Rules used = {1551, 2210, 27, 2234, 27, 1503, 1412, 1455, 1538, 27, 1412, 1786, 414}
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
\(\displaystyle \int \frac {1}{\left (5 x^2+7\right )^3 \sqrt {x^4+3 x^2+2}} \, dx\) |
\(\Big \downarrow \) 1551 |
\(\displaystyle \frac {1}{168} \int \frac {-25 x^4-10 x^2+74}{\left (5 x^2+7\right )^2 \sqrt {x^4+3 x^2+2}}dx-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 2210 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{84} \int \frac {3 \left (325 x^4+770 x^2+946\right )}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \int \frac {325 x^4+770 x^2+946}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 2234 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (505 \int \frac {1}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx-\frac {1}{25} \int -\frac {25 \left (65 x^2+63\right )}{\sqrt {x^4+3 x^2+2}}dx\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (505 \int \frac {1}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx+\int \frac {65 x^2+63}{\sqrt {x^4+3 x^2+2}}dx\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 1503 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (63 \int \frac {1}{\sqrt {x^4+3 x^2+2}}dx+65 \int \frac {x^2}{\sqrt {x^4+3 x^2+2}}dx+505 \int \frac {1}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 1412 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (65 \int \frac {x^2}{\sqrt {x^4+3 x^2+2}}dx+505 \int \frac {1}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx+\frac {63 \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{\sqrt {2} \sqrt {x^4+3 x^2+2}}\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 1455 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (505 \int \frac {1}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx+\frac {63 \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{\sqrt {2} \sqrt {x^4+3 x^2+2}}+65 \left (\frac {x \left (x^2+2\right )}{\sqrt {x^4+3 x^2+2}}-\frac {\sqrt {2} \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} E\left (\arctan (x)\left |\frac {1}{2}\right .\right )}{\sqrt {x^4+3 x^2+2}}\right )\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 1538 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (505 \left (\frac {1}{2} \int \frac {1}{\sqrt {x^4+3 x^2+2}}dx-\frac {5}{4} \int \frac {2 \left (x^2+1\right )}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx\right )+\frac {63 \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{\sqrt {2} \sqrt {x^4+3 x^2+2}}+65 \left (\frac {x \left (x^2+2\right )}{\sqrt {x^4+3 x^2+2}}-\frac {\sqrt {2} \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} E\left (\arctan (x)\left |\frac {1}{2}\right .\right )}{\sqrt {x^4+3 x^2+2}}\right )\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (505 \left (\frac {1}{2} \int \frac {1}{\sqrt {x^4+3 x^2+2}}dx-\frac {5}{2} \int \frac {x^2+1}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx\right )+\frac {63 \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{\sqrt {2} \sqrt {x^4+3 x^2+2}}+65 \left (\frac {x \left (x^2+2\right )}{\sqrt {x^4+3 x^2+2}}-\frac {\sqrt {2} \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} E\left (\arctan (x)\left |\frac {1}{2}\right .\right )}{\sqrt {x^4+3 x^2+2}}\right )\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 1412 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (505 \left (\frac {\left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{2 \sqrt {2} \sqrt {x^4+3 x^2+2}}-\frac {5}{2} \int \frac {x^2+1}{\left (5 x^2+7\right ) \sqrt {x^4+3 x^2+2}}dx\right )+\frac {63 \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{\sqrt {2} \sqrt {x^4+3 x^2+2}}+65 \left (\frac {x \left (x^2+2\right )}{\sqrt {x^4+3 x^2+2}}-\frac {\sqrt {2} \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} E\left (\arctan (x)\left |\frac {1}{2}\right .\right )}{\sqrt {x^4+3 x^2+2}}\right )\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 1786 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (505 \left (\frac {\left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{2 \sqrt {2} \sqrt {x^4+3 x^2+2}}-\frac {5 \sqrt {x^2+1} \sqrt {x^2+2} \int \frac {\sqrt {x^2+1}}{\sqrt {x^2+2} \left (5 x^2+7\right )}dx}{2 \sqrt {x^4+3 x^2+2}}\right )+\frac {63 \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{\sqrt {2} \sqrt {x^4+3 x^2+2}}+65 \left (\frac {x \left (x^2+2\right )}{\sqrt {x^4+3 x^2+2}}-\frac {\sqrt {2} \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} E\left (\arctan (x)\left |\frac {1}{2}\right .\right )}{\sqrt {x^4+3 x^2+2}}\right )\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
\(\Big \downarrow \) 414 |
\(\displaystyle \frac {1}{168} \left (\frac {1}{28} \left (\frac {63 \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{\sqrt {2} \sqrt {x^4+3 x^2+2}}+65 \left (\frac {x \left (x^2+2\right )}{\sqrt {x^4+3 x^2+2}}-\frac {\sqrt {2} \left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} E\left (\arctan (x)\left |\frac {1}{2}\right .\right )}{\sqrt {x^4+3 x^2+2}}\right )+505 \left (\frac {\left (x^2+1\right ) \sqrt {\frac {x^2+2}{x^2+1}} \operatorname {EllipticF}\left (\arctan (x),\frac {1}{2}\right )}{2 \sqrt {2} \sqrt {x^4+3 x^2+2}}-\frac {5 \left (x^2+2\right ) \operatorname {EllipticPi}\left (\frac {2}{7},\arctan (x),\frac {1}{2}\right )}{14 \sqrt {2} \sqrt {\frac {x^2+2}{x^2+1}} \sqrt {x^4+3 x^2+2}}\right )\right )-\frac {325 x \sqrt {x^4+3 x^2+2}}{28 \left (5 x^2+7\right )}\right )-\frac {25 x \sqrt {x^4+3 x^2+2}}{168 \left (5 x^2+7\right )^2}\) |
(-25*x*Sqrt[2 + 3*x^2 + x^4])/(168*(7 + 5*x^2)^2) + ((-325*x*Sqrt[2 + 3*x^ 2 + x^4])/(28*(7 + 5*x^2)) + (65*((x*(2 + x^2))/Sqrt[2 + 3*x^2 + x^4] - (S qrt[2]*(1 + x^2)*Sqrt[(2 + x^2)/(1 + x^2)]*EllipticE[ArcTan[x], 1/2])/Sqrt [2 + 3*x^2 + x^4]) + (63*(1 + x^2)*Sqrt[(2 + x^2)/(1 + x^2)]*EllipticF[Arc Tan[x], 1/2])/(Sqrt[2]*Sqrt[2 + 3*x^2 + x^4]) + 505*(((1 + x^2)*Sqrt[(2 + x^2)/(1 + x^2)]*EllipticF[ArcTan[x], 1/2])/(2*Sqrt[2]*Sqrt[2 + 3*x^2 + x^4 ]) - (5*(2 + x^2)*EllipticPi[2/7, ArcTan[x], 1/2])/(14*Sqrt[2]*Sqrt[(2 + x ^2)/(1 + x^2)]*Sqrt[2 + 3*x^2 + x^4])))/28)/168
3.4.6.3.1 Defintions of rubi rules used
Int[(a_)*(Fx_), x_Symbol] :> Simp[a Int[Fx, x], x] /; FreeQ[a, x] && !Ma tchQ[Fx, (b_)*(Gx_) /; FreeQ[b, x]]
Int[Sqrt[(c_) + (d_.)*(x_)^2]/(((a_) + (b_.)*(x_)^2)*Sqrt[(e_) + (f_.)*(x_) ^2]), x_Symbol] :> Simp[c*(Sqrt[e + f*x^2]/(a*e*Rt[d/c, 2]*Sqrt[c + d*x^2]* Sqrt[c*((e + f*x^2)/(e*(c + d*x^2)))]))*EllipticPi[1 - b*(c/(a*d)), ArcTan[ Rt[d/c, 2]*x], 1 - c*(f/(d*e))], x] /; FreeQ[{a, b, c, d, e, f}, x] && PosQ [d/c]
Int[1/Sqrt[(a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4], x_Symbol] :> With[{q = Rt[b ^2 - 4*a*c, 2]}, Simp[(2*a + (b + q)*x^2)*(Sqrt[(2*a + (b - q)*x^2)/(2*a + (b + q)*x^2)]/(2*a*Rt[(b + q)/(2*a), 2]*Sqrt[a + b*x^2 + c*x^4]))*EllipticF [ArcTan[Rt[(b + q)/(2*a), 2]*x], 2*(q/(b + q))], x] /; PosQ[(b + q)/a] && !(PosQ[(b - q)/a] && SimplerSqrtQ[(b - q)/(2*a), (b + q)/(2*a)])] /; FreeQ[ {a, b, c}, x] && GtQ[b^2 - 4*a*c, 0]
Int[(x_)^2/Sqrt[(a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4], x_Symbol] :> With[{q = Rt[b^2 - 4*a*c, 2]}, Simp[x*((b + q + 2*c*x^2)/(2*c*Sqrt[a + b*x^2 + c*x^4 ])), x] - Simp[Rt[(b + q)/(2*a), 2]*(2*a + (b + q)*x^2)*(Sqrt[(2*a + (b - q )*x^2)/(2*a + (b + q)*x^2)]/(2*c*Sqrt[a + b*x^2 + c*x^4]))*EllipticE[ArcTan [Rt[(b + q)/(2*a), 2]*x], 2*(q/(b + q))], x] /; PosQ[(b + q)/a] && !(PosQ[ (b - q)/a] && SimplerSqrtQ[(b - q)/(2*a), (b + q)/(2*a)])] /; FreeQ[{a, b, c}, x] && GtQ[b^2 - 4*a*c, 0]
Int[((d_) + (e_.)*(x_)^2)/Sqrt[(a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4], x_Symbo l] :> With[{q = Rt[b^2 - 4*a*c, 2]}, Simp[d Int[1/Sqrt[a + b*x^2 + c*x^4] , x], x] + Simp[e Int[x^2/Sqrt[a + b*x^2 + c*x^4], x], x] /; PosQ[(b + q) /a] || PosQ[(b - q)/a]] /; FreeQ[{a, b, c, d, e}, x] && GtQ[b^2 - 4*a*c, 0]
Int[1/(((d_) + (e_.)*(x_)^2)*Sqrt[(a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4]), x_S ymbol] :> With[{q = Rt[b^2 - 4*a*c, 2]}, Simp[2*(c/(2*c*d - e*(b - q))) I nt[1/Sqrt[a + b*x^2 + c*x^4], x], x] - Simp[e/(2*c*d - e*(b - q)) Int[(b - q + 2*c*x^2)/((d + e*x^2)*Sqrt[a + b*x^2 + c*x^4]), x], x]] /; FreeQ[{a, b, c, d, e}, x] && GtQ[b^2 - 4*a*c, 0] && NeQ[c*d^2 - b*d*e + a*e^2, 0] && !LtQ[c, 0]
Int[((d_) + (e_.)*(x_)^2)^(q_)/Sqrt[(a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4], x_ Symbol] :> Simp[(-e^2)*x*(d + e*x^2)^(q + 1)*(Sqrt[a + b*x^2 + c*x^4]/(2*d* (q + 1)*(c*d^2 - b*d*e + a*e^2))), x] + Simp[1/(2*d*(q + 1)*(c*d^2 - b*d*e + a*e^2)) Int[((d + e*x^2)^(q + 1)/Sqrt[a + b*x^2 + c*x^4])*Simp[a*e^2*(2 *q + 3) + 2*d*(c*d - b*e)*(q + 1) - 2*e*(c*d*(q + 1) - b*e*(q + 2))*x^2 + c *e^2*(2*q + 5)*x^4, x], x], x] /; FreeQ[{a, b, c, d, e}, x] && NeQ[b^2 - 4* a*c, 0] && NeQ[c*d^2 - b*d*e + a*e^2, 0] && ILtQ[q, -1]
Int[((d_) + (e_.)*(x_)^(n_))^(q_.)*((f_) + (g_.)*(x_)^(n_))^(r_.)*((a_) + ( b_.)*(x_)^(n_) + (c_.)*(x_)^(n2_))^(p_), x_Symbol] :> Simp[(a + b*x^n + c*x ^(2*n))^FracPart[p]/((d + e*x^n)^FracPart[p]*(a/d + (c*x^n)/e)^FracPart[p]) Int[(d + e*x^n)^(p + q)*(f + g*x^n)^r*(a/d + (c/e)*x^n)^p, x], x] /; Fre eQ[{a, b, c, d, e, f, g, n, p, q, r}, x] && EqQ[n2, 2*n] && NeQ[b^2 - 4*a*c , 0] && EqQ[c*d^2 - b*d*e + a*e^2, 0] && !IntegerQ[p]
Int[((P4x_)*((d_) + (e_.)*(x_)^2)^(q_))/Sqrt[(a_) + (b_.)*(x_)^2 + (c_.)*(x _)^4], x_Symbol] :> With[{A = Coeff[P4x, x, 0], B = Coeff[P4x, x, 2], C = C oeff[P4x, x, 4]}, Simp[(-(C*d^2 - B*d*e + A*e^2))*x*(d + e*x^2)^(q + 1)*(Sq rt[a + b*x^2 + c*x^4]/(2*d*(q + 1)*(c*d^2 - b*d*e + a*e^2))), x] + Simp[1/( 2*d*(q + 1)*(c*d^2 - b*d*e + a*e^2)) Int[((d + e*x^2)^(q + 1)/Sqrt[a + b* x^2 + c*x^4])*Simp[a*d*(C*d - B*e) + A*(a*e^2*(2*q + 3) + 2*d*(c*d - b*e)*( q + 1)) - 2*((B*d - A*e)*(b*e*(q + 2) - c*d*(q + 1)) - C*d*(b*d + a*e*(q + 1)))*x^2 + c*(C*d^2 - B*d*e + A*e^2)*(2*q + 5)*x^4, x], x], x]] /; FreeQ[{a , b, c, d, e}, x] && PolyQ[P4x, x^2] && LeQ[Expon[P4x, x], 4] && ILtQ[q, -1 ]
Int[(P4x_)/(((d_) + (e_.)*(x_)^2)*Sqrt[(a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4]) , x_Symbol] :> With[{A = Coeff[P4x, x, 0], B = Coeff[P4x, x, 2], C = Coeff[ P4x, x, 4]}, Simp[-(e^2)^(-1) Int[(C*d - B*e - C*e*x^2)/Sqrt[a + b*x^2 + c*x^4], x], x] + Simp[(C*d^2 - B*d*e + A*e^2)/e^2 Int[1/((d + e*x^2)*Sqrt [a + b*x^2 + c*x^4]), x], x]] /; FreeQ[{a, b, c, d, e}, x] && PolyQ[P4x, x^ 2, 2] && NeQ[c*d^2 - a*e^2, 0]
Result contains complex when optimal does not.
Time = 3.48 (sec) , antiderivative size = 183, normalized size of antiderivative = 0.77
method | result | size |
risch | \(-\frac {25 \sqrt {x^{4}+3 x^{2}+2}\, x \left (65 x^{2}+119\right )}{4704 \left (5 x^{2}+7\right )^{2}}-\frac {3 i \sqrt {2}\, \sqrt {2 x^{2}+4}\, \sqrt {x^{2}+1}\, F\left (\frac {i \sqrt {2}\, x}{2}, \sqrt {2}\right )}{448 \sqrt {x^{4}+3 x^{2}+2}}+\frac {65 i \sqrt {2}\, \sqrt {2 x^{2}+4}\, \sqrt {x^{2}+1}\, \left (F\left (\frac {i \sqrt {2}\, x}{2}, \sqrt {2}\right )-E\left (\frac {i \sqrt {2}\, x}{2}, \sqrt {2}\right )\right )}{9408 \sqrt {x^{4}+3 x^{2}+2}}-\frac {505 i \sqrt {2}\, \sqrt {1+\frac {x^{2}}{2}}\, \sqrt {x^{2}+1}\, \Pi \left (\frac {i \sqrt {2}\, x}{2}, \frac {10}{7}, \sqrt {2}\right )}{32928 \sqrt {x^{4}+3 x^{2}+2}}\) | \(183\) |
default | \(-\frac {25 x \sqrt {x^{4}+3 x^{2}+2}}{168 \left (5 x^{2}+7\right )^{2}}-\frac {325 x \sqrt {x^{4}+3 x^{2}+2}}{4704 \left (5 x^{2}+7\right )}+\frac {i \sqrt {2}\, \sqrt {2 x^{2}+4}\, \sqrt {x^{2}+1}\, F\left (\frac {i \sqrt {2}\, x}{2}, \sqrt {2}\right )}{4704 \sqrt {x^{4}+3 x^{2}+2}}-\frac {65 i \sqrt {2}\, \sqrt {2 x^{2}+4}\, \sqrt {x^{2}+1}\, E\left (\frac {i \sqrt {2}\, x}{2}, \sqrt {2}\right )}{9408 \sqrt {x^{4}+3 x^{2}+2}}-\frac {505 i \sqrt {2}\, \sqrt {1+\frac {x^{2}}{2}}\, \sqrt {x^{2}+1}\, \Pi \left (\frac {i \sqrt {2}\, x}{2}, \frac {10}{7}, \sqrt {2}\right )}{32928 \sqrt {x^{4}+3 x^{2}+2}}\) | \(186\) |
elliptic | \(-\frac {25 x \sqrt {x^{4}+3 x^{2}+2}}{168 \left (5 x^{2}+7\right )^{2}}-\frac {325 x \sqrt {x^{4}+3 x^{2}+2}}{4704 \left (5 x^{2}+7\right )}+\frac {i \sqrt {2}\, \sqrt {2 x^{2}+4}\, \sqrt {x^{2}+1}\, F\left (\frac {i \sqrt {2}\, x}{2}, \sqrt {2}\right )}{4704 \sqrt {x^{4}+3 x^{2}+2}}-\frac {65 i \sqrt {2}\, \sqrt {2 x^{2}+4}\, \sqrt {x^{2}+1}\, E\left (\frac {i \sqrt {2}\, x}{2}, \sqrt {2}\right )}{9408 \sqrt {x^{4}+3 x^{2}+2}}-\frac {505 i \sqrt {2}\, \sqrt {1+\frac {x^{2}}{2}}\, \sqrt {x^{2}+1}\, \Pi \left (\frac {i \sqrt {2}\, x}{2}, \frac {10}{7}, \sqrt {2}\right )}{32928 \sqrt {x^{4}+3 x^{2}+2}}\) | \(186\) |
-25/4704*(x^4+3*x^2+2)^(1/2)*x*(65*x^2+119)/(5*x^2+7)^2-3/448*I*2^(1/2)*(2 *x^2+4)^(1/2)*(x^2+1)^(1/2)/(x^4+3*x^2+2)^(1/2)*EllipticF(1/2*I*2^(1/2)*x, 2^(1/2))+65/9408*I*2^(1/2)*(2*x^2+4)^(1/2)*(x^2+1)^(1/2)/(x^4+3*x^2+2)^(1/ 2)*(EllipticF(1/2*I*2^(1/2)*x,2^(1/2))-EllipticE(1/2*I*2^(1/2)*x,2^(1/2))) -505/32928*I*2^(1/2)*(1+1/2*x^2)^(1/2)*(x^2+1)^(1/2)/(x^4+3*x^2+2)^(1/2)*E llipticPi(1/2*I*2^(1/2)*x,10/7,2^(1/2))
\[ \int \frac {1}{\left (7+5 x^2\right )^3 \sqrt {2+3 x^2+x^4}} \, dx=\int { \frac {1}{\sqrt {x^{4} + 3 \, x^{2} + 2} {\left (5 \, x^{2} + 7\right )}^{3}} \,d x } \]
integral(sqrt(x^4 + 3*x^2 + 2)/(125*x^10 + 900*x^8 + 2560*x^6 + 3598*x^4 + 2499*x^2 + 686), x)
\[ \int \frac {1}{\left (7+5 x^2\right )^3 \sqrt {2+3 x^2+x^4}} \, dx=\int \frac {1}{\sqrt {\left (x^{2} + 1\right ) \left (x^{2} + 2\right )} \left (5 x^{2} + 7\right )^{3}}\, dx \]
\[ \int \frac {1}{\left (7+5 x^2\right )^3 \sqrt {2+3 x^2+x^4}} \, dx=\int { \frac {1}{\sqrt {x^{4} + 3 \, x^{2} + 2} {\left (5 \, x^{2} + 7\right )}^{3}} \,d x } \]
\[ \int \frac {1}{\left (7+5 x^2\right )^3 \sqrt {2+3 x^2+x^4}} \, dx=\int { \frac {1}{\sqrt {x^{4} + 3 \, x^{2} + 2} {\left (5 \, x^{2} + 7\right )}^{3}} \,d x } \]
Timed out. \[ \int \frac {1}{\left (7+5 x^2\right )^3 \sqrt {2+3 x^2+x^4}} \, dx=\int \frac {1}{{\left (5\,x^2+7\right )}^3\,\sqrt {x^4+3\,x^2+2}} \,d x \]