3.2.8 \(\int \frac {(1+\sqrt {3}) \sqrt [3]{a}+\sqrt [3]{b} x}{((1-\sqrt {3}) \sqrt [3]{a}+\sqrt [3]{b} x) \sqrt {-a-b x^3}} \, dx\) [108]

Optimal. Leaf size=72 \[ -\frac {2 \tan ^{-1}\left (\frac {\sqrt {-3+2 \sqrt {3}} \sqrt [6]{a} \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{\sqrt {-a-b x^3}}\right )}{\sqrt {-3+2 \sqrt {3}} \sqrt [6]{a} \sqrt [3]{b}} \]

[Out]

-2*arctan(a^(1/6)*(a^(1/3)+b^(1/3)*x)*(-3+2*3^(1/2))^(1/2)/(-b*x^3-a)^(1/2))/a^(1/6)/b^(1/3)/(-3+2*3^(1/2))^(1
/2)

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Rubi [A]
time = 0.12, antiderivative size = 72, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 61, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.033, Rules used = {2165, 209} \begin {gather*} -\frac {2 \text {ArcTan}\left (\frac {\sqrt {2 \sqrt {3}-3} \sqrt [6]{a} \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{\sqrt {-a-b x^3}}\right )}{\sqrt {2 \sqrt {3}-3} \sqrt [6]{a} \sqrt [3]{b}} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[((1 + Sqrt[3])*a^(1/3) + b^(1/3)*x)/(((1 - Sqrt[3])*a^(1/3) + b^(1/3)*x)*Sqrt[-a - b*x^3]),x]

[Out]

(-2*ArcTan[(Sqrt[-3 + 2*Sqrt[3]]*a^(1/6)*(a^(1/3) + b^(1/3)*x))/Sqrt[-a - b*x^3]])/(Sqrt[-3 + 2*Sqrt[3]]*a^(1/
6)*b^(1/3))

Rule 209

Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(1/(Rt[a, 2]*Rt[b, 2]))*ArcTan[Rt[b, 2]*(x/Rt[a, 2])], x] /;
FreeQ[{a, b}, x] && PosQ[a/b] && (GtQ[a, 0] || GtQ[b, 0])

Rule 2165

Int[((e_) + (f_.)*(x_))/(((c_) + (d_.)*(x_))*Sqrt[(a_) + (b_.)*(x_)^3]), x_Symbol] :> With[{k = Simplify[(d*e
+ 2*c*f)/(c*f)]}, Dist[(1 + k)*(e/d), Subst[Int[1/(1 + (3 + 2*k)*a*x^2), x], x, (1 + (1 + k)*d*(x/c))/Sqrt[a +
b*x^3]], x]] /; FreeQ[{a, b, c, d, e, f}, x] && NeQ[d*e - c*f, 0] && EqQ[b^2*c^6 - 20*a*b*c^3*d^3 - 8*a^2*d^6
, 0] && EqQ[6*a*d^4*e - c*f*(b*c^3 - 22*a*d^3), 0]

Rubi steps

\begin {align*} \int \frac {\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\sqrt [3]{b} x}{\left (\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\sqrt [3]{b} x\right ) \sqrt {-a-b x^3}} \, dx &=-\frac {\left (2 \sqrt [3]{a}\right ) \text {Subst}\left (\int \frac {1}{1-\left (3-2 \sqrt {3}\right ) a x^2} \, dx,x,\frac {1+\frac {\sqrt [3]{b} x}{\sqrt [3]{a}}}{\sqrt {-a-b x^3}}\right )}{\sqrt [3]{b}}\\ &=-\frac {2 \tan ^{-1}\left (\frac {\sqrt {-3+2 \sqrt {3}} \sqrt [6]{a} \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{\sqrt {-a-b x^3}}\right )}{\sqrt {-3+2 \sqrt {3}} \sqrt [6]{a} \sqrt [3]{b}}\\ \end {align*}

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Mathematica [A]
time = 7.14, size = 87, normalized size = 1.21 \begin {gather*} -\frac {2 \tan ^{-1}\left (\frac {\sqrt {1+\frac {2}{\sqrt {3}}} \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{\sqrt [6]{a} \sqrt {-a-b x^3}}\right )}{\sqrt {-3+2 \sqrt {3}} \sqrt [6]{a} \sqrt [3]{b}} \end {gather*}

Warning: Unable to verify antiderivative.

[In]

Integrate[((1 + Sqrt[3])*a^(1/3) + b^(1/3)*x)/(((1 - Sqrt[3])*a^(1/3) + b^(1/3)*x)*Sqrt[-a - b*x^3]),x]

[Out]

(-2*ArcTan[(Sqrt[1 + 2/Sqrt[3]]*(a^(2/3) - a^(1/3)*b^(1/3)*x + b^(2/3)*x^2))/(a^(1/6)*Sqrt[-a - b*x^3])])/(Sqr
t[-3 + 2*Sqrt[3]]*a^(1/6)*b^(1/3))

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Maple [F]
time = 0.05, size = 0, normalized size = 0.00 \[\int \frac {b^{\frac {1}{3}} x +a^{\frac {1}{3}} \left (1+\sqrt {3}\right )}{\left (b^{\frac {1}{3}} x +a^{\frac {1}{3}} \left (1-\sqrt {3}\right )\right ) \sqrt {-b \,x^{3}-a}}\, dx\]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b^(1/3)*x+a^(1/3)*(1+3^(1/2)))/(b^(1/3)*x+a^(1/3)*(1-3^(1/2)))/(-b*x^3-a)^(1/2),x)

[Out]

int((b^(1/3)*x+a^(1/3)*(1+3^(1/2)))/(b^(1/3)*x+a^(1/3)*(1-3^(1/2)))/(-b*x^3-a)^(1/2),x)

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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b^(1/3)*x+a^(1/3)*(1+3^(1/2)))/(b^(1/3)*x+a^(1/3)*(1-3^(1/2)))/(-b*x^3-a)^(1/2),x, algorithm="maxim
a")

[Out]

integrate((b^(1/3)*x + a^(1/3)*(sqrt(3) + 1))/(sqrt(-b*x^3 - a)*(b^(1/3)*x - a^(1/3)*(sqrt(3) - 1))), x)

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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 130 vs. \(2 (52) = 104\).
time = 1.09, size = 1303, normalized size = 18.10 \begin {gather*} \left [\frac {1}{2} \, \sqrt {\frac {1}{3}} a^{\frac {1}{3}} \sqrt {-\frac {2 \, \sqrt {3} + 3}{a b^{\frac {2}{3}}}} \log \left (\frac {b^{8} x^{24} - 1840 \, a b^{7} x^{21} + 67264 \, a^{2} b^{6} x^{18} - 58624 \, a^{3} b^{5} x^{15} + 504064 \, a^{4} b^{4} x^{12} + 2140160 \, a^{5} b^{3} x^{9} + 3100672 \, a^{6} b^{2} x^{6} + 1089536 \, a^{7} b x^{3} + 28672 \, a^{8} + 32 \, {\left (9 \, b^{7} x^{22} - 846 \, a b^{6} x^{19} + 4617 \, a^{2} b^{5} x^{16} + 5472 \, a^{3} b^{4} x^{13} + 43776 \, a^{4} b^{3} x^{10} + 98496 \, a^{5} b^{2} x^{7} + 59328 \, a^{6} b x^{4} + 4608 \, a^{7} x - \sqrt {3} {\left (5 \, b^{7} x^{22} - 505 \, a b^{6} x^{19} + 2130 \, a^{2} b^{5} x^{16} - 4928 \, a^{3} b^{4} x^{13} - 28688 \, a^{4} b^{3} x^{10} - 53760 \, a^{5} b^{2} x^{7} - 35200 \, a^{6} b x^{4} - 2560 \, a^{7} x\right )}\right )} a^{\frac {2}{3}} b^{\frac {1}{3}} - 8 \, {\left (3 \, b^{7} x^{23} - 1077 \, a b^{6} x^{20} + 13320 \, a^{2} b^{5} x^{17} - 19200 \, a^{3} b^{4} x^{14} - 111360 \, a^{4} b^{3} x^{11} - 345024 \, a^{5} b^{2} x^{8} - 328704 \, a^{6} b x^{5} - 61440 \, a^{7} x^{2} - 2 \, \sqrt {3} {\left (b^{7} x^{23} - 299 \, a b^{6} x^{20} + 4260 \, a^{2} b^{5} x^{17} + 1520 \, a^{3} b^{4} x^{14} + 26720 \, a^{4} b^{3} x^{11} + 105024 \, a^{5} b^{2} x^{8} + 93184 \, a^{6} b x^{5} + 17920 \, a^{7} x^{2}\right )}\right )} a^{\frac {1}{3}} b^{\frac {2}{3}} + 4 \, \sqrt {\frac {1}{3}} {\left ({\left (3 \, b^{7} x^{22} - 2688 \, a b^{6} x^{19} + 56952 \, a^{2} b^{5} x^{16} - 93504 \, a^{3} b^{4} x^{13} - 63552 \, a^{4} b^{3} x^{10} - 377856 \, a^{5} b^{2} x^{7} - 314880 \, a^{6} b x^{4} - 24576 \, a^{7} x - 2 \, \sqrt {3} {\left (b^{7} x^{22} - 764 \, a b^{6} x^{19} + 16860 \, a^{2} b^{5} x^{16} - 19792 \, a^{3} b^{4} x^{13} + 42368 \, a^{4} b^{3} x^{10} + 104448 \, a^{5} b^{2} x^{7} + 90880 \, a^{6} b x^{4} + 7168 \, a^{7} x\right )}\right )} \sqrt {-b x^{3} - a} a^{\frac {2}{3}} b^{\frac {2}{3}} + 6 \, {\left (81 \, a b^{7} x^{20} - 4752 \, a^{2} b^{6} x^{17} + 14472 \, a^{3} b^{5} x^{14} - 24192 \, a^{4} b^{4} x^{11} - 39744 \, a^{5} b^{3} x^{8} - 69120 \, a^{6} b^{2} x^{5} - 13824 \, a^{7} b x^{2} - \sqrt {3} {\left (47 \, a b^{7} x^{20} - 2724 \, a^{2} b^{6} x^{17} + 8976 \, a^{3} b^{5} x^{14} - 4928 \, a^{4} b^{4} x^{11} + 32448 \, a^{5} b^{3} x^{8} + 37632 \, a^{6} b^{2} x^{5} + 8192 \, a^{7} b x^{2}\right )}\right )} \sqrt {-b x^{3} - a} a^{\frac {1}{3}} - 2 \, {\left (30 \, a b^{7} x^{21} - 5010 \, a^{2} b^{6} x^{18} + 44640 \, a^{3} b^{5} x^{15} - 21360 \, a^{4} b^{4} x^{12} + 79872 \, a^{5} b^{3} x^{9} + 233856 \, a^{6} b^{2} x^{6} + 86016 \, a^{7} b x^{3} + 3072 \, a^{8} - \sqrt {3} {\left (17 \, a b^{7} x^{21} - 2920 \, a^{2} b^{6} x^{18} + 24864 \, a^{3} b^{5} x^{15} - 26576 \, a^{4} b^{4} x^{12} - 56000 \, a^{5} b^{3} x^{9} - 115968 \, a^{6} b^{2} x^{6} - 56320 \, a^{7} b x^{3} - 1024 \, a^{8}\right )}\right )} \sqrt {-b x^{3} - a} b^{\frac {1}{3}}\right )} \sqrt {-\frac {2 \, \sqrt {3} + 3}{a b^{\frac {2}{3}}}} + 32 \, \sqrt {3} {\left (35 \, a b^{7} x^{21} - 1141 \, a^{2} b^{6} x^{18} + 2544 \, a^{3} b^{5} x^{15} + 6760 \, a^{4} b^{4} x^{12} + 39520 \, a^{5} b^{3} x^{9} + 55680 \, a^{6} b^{2} x^{6} + 19712 \, a^{7} b x^{3} + 512 \, a^{8}\right )}}{b^{8} x^{24} + 80 \, a b^{7} x^{21} + 2368 \, a^{2} b^{6} x^{18} + 30080 \, a^{3} b^{5} x^{15} + 121984 \, a^{4} b^{4} x^{12} - 240640 \, a^{5} b^{3} x^{9} + 151552 \, a^{6} b^{2} x^{6} - 40960 \, a^{7} b x^{3} + 4096 \, a^{8}}\right ), \sqrt {\frac {1}{3}} a^{\frac {1}{3}} \sqrt {\frac {2 \, \sqrt {3} + 3}{a b^{\frac {2}{3}}}} \arctan \left (\frac {\sqrt {\frac {1}{3}} {\left (\sqrt {-b x^{3} - a} a^{\frac {1}{3}} b x^{2} + 2 \, \sqrt {-b x^{3} - a} {\left (\sqrt {3} x - 2 \, x\right )} a^{\frac {2}{3}} b^{\frac {2}{3}} + 2 \, \sqrt {-b x^{3} - a} {\left (\sqrt {3} a - a\right )} b^{\frac {1}{3}}\right )} \sqrt {\frac {2 \, \sqrt {3} + 3}{a b^{\frac {2}{3}}}}}{2 \, {\left (b x^{3} + a\right )}}\right )\right ] \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b^(1/3)*x+a^(1/3)*(1+3^(1/2)))/(b^(1/3)*x+a^(1/3)*(1-3^(1/2)))/(-b*x^3-a)^(1/2),x, algorithm="frica
s")

[Out]

[1/2*sqrt(1/3)*a^(1/3)*sqrt(-(2*sqrt(3) + 3)/(a*b^(2/3)))*log((b^8*x^24 - 1840*a*b^7*x^21 + 67264*a^2*b^6*x^18
- 58624*a^3*b^5*x^15 + 504064*a^4*b^4*x^12 + 2140160*a^5*b^3*x^9 + 3100672*a^6*b^2*x^6 + 1089536*a^7*b*x^3 +
28672*a^8 + 32*(9*b^7*x^22 - 846*a*b^6*x^19 + 4617*a^2*b^5*x^16 + 5472*a^3*b^4*x^13 + 43776*a^4*b^3*x^10 + 984
96*a^5*b^2*x^7 + 59328*a^6*b*x^4 + 4608*a^7*x - sqrt(3)*(5*b^7*x^22 - 505*a*b^6*x^19 + 2130*a^2*b^5*x^16 - 492
8*a^3*b^4*x^13 - 28688*a^4*b^3*x^10 - 53760*a^5*b^2*x^7 - 35200*a^6*b*x^4 - 2560*a^7*x))*a^(2/3)*b^(1/3) - 8*(
3*b^7*x^23 - 1077*a*b^6*x^20 + 13320*a^2*b^5*x^17 - 19200*a^3*b^4*x^14 - 111360*a^4*b^3*x^11 - 345024*a^5*b^2*
x^8 - 328704*a^6*b*x^5 - 61440*a^7*x^2 - 2*sqrt(3)*(b^7*x^23 - 299*a*b^6*x^20 + 4260*a^2*b^5*x^17 + 1520*a^3*b
^4*x^14 + 26720*a^4*b^3*x^11 + 105024*a^5*b^2*x^8 + 93184*a^6*b*x^5 + 17920*a^7*x^2))*a^(1/3)*b^(2/3) + 4*sqrt
(1/3)*((3*b^7*x^22 - 2688*a*b^6*x^19 + 56952*a^2*b^5*x^16 - 93504*a^3*b^4*x^13 - 63552*a^4*b^3*x^10 - 377856*a
^5*b^2*x^7 - 314880*a^6*b*x^4 - 24576*a^7*x - 2*sqrt(3)*(b^7*x^22 - 764*a*b^6*x^19 + 16860*a^2*b^5*x^16 - 1979
2*a^3*b^4*x^13 + 42368*a^4*b^3*x^10 + 104448*a^5*b^2*x^7 + 90880*a^6*b*x^4 + 7168*a^7*x))*sqrt(-b*x^3 - a)*a^(
2/3)*b^(2/3) + 6*(81*a*b^7*x^20 - 4752*a^2*b^6*x^17 + 14472*a^3*b^5*x^14 - 24192*a^4*b^4*x^11 - 39744*a^5*b^3*
x^8 - 69120*a^6*b^2*x^5 - 13824*a^7*b*x^2 - sqrt(3)*(47*a*b^7*x^20 - 2724*a^2*b^6*x^17 + 8976*a^3*b^5*x^14 - 4
928*a^4*b^4*x^11 + 32448*a^5*b^3*x^8 + 37632*a^6*b^2*x^5 + 8192*a^7*b*x^2))*sqrt(-b*x^3 - a)*a^(1/3) - 2*(30*a
*b^7*x^21 - 5010*a^2*b^6*x^18 + 44640*a^3*b^5*x^15 - 21360*a^4*b^4*x^12 + 79872*a^5*b^3*x^9 + 233856*a^6*b^2*x
^6 + 86016*a^7*b*x^3 + 3072*a^8 - sqrt(3)*(17*a*b^7*x^21 - 2920*a^2*b^6*x^18 + 24864*a^3*b^5*x^15 - 26576*a^4*
b^4*x^12 - 56000*a^5*b^3*x^9 - 115968*a^6*b^2*x^6 - 56320*a^7*b*x^3 - 1024*a^8))*sqrt(-b*x^3 - a)*b^(1/3))*sqr
t(-(2*sqrt(3) + 3)/(a*b^(2/3))) + 32*sqrt(3)*(35*a*b^7*x^21 - 1141*a^2*b^6*x^18 + 2544*a^3*b^5*x^15 + 6760*a^4
*b^4*x^12 + 39520*a^5*b^3*x^9 + 55680*a^6*b^2*x^6 + 19712*a^7*b*x^3 + 512*a^8))/(b^8*x^24 + 80*a*b^7*x^21 + 23
68*a^2*b^6*x^18 + 30080*a^3*b^5*x^15 + 121984*a^4*b^4*x^12 - 240640*a^5*b^3*x^9 + 151552*a^6*b^2*x^6 - 40960*a
^7*b*x^3 + 4096*a^8)), sqrt(1/3)*a^(1/3)*sqrt((2*sqrt(3) + 3)/(a*b^(2/3)))*arctan(1/2*sqrt(1/3)*(sqrt(-b*x^3 -
a)*a^(1/3)*b*x^2 + 2*sqrt(-b*x^3 - a)*(sqrt(3)*x - 2*x)*a^(2/3)*b^(2/3) + 2*sqrt(-b*x^3 - a)*(sqrt(3)*a - a)*
b^(1/3))*sqrt((2*sqrt(3) + 3)/(a*b^(2/3)))/(b*x^3 + a))]

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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {\sqrt [3]{a} + \sqrt {3} \sqrt [3]{a} + \sqrt [3]{b} x}{\sqrt {- a - b x^{3}} \left (- \sqrt {3} \sqrt [3]{a} + \sqrt [3]{a} + \sqrt [3]{b} x\right )}\, dx \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b**(1/3)*x+a**(1/3)*(1+3**(1/2)))/(b**(1/3)*x+a**(1/3)*(1-3**(1/2)))/(-b*x**3-a)**(1/2),x)

[Out]

Integral((a**(1/3) + sqrt(3)*a**(1/3) + b**(1/3)*x)/(sqrt(-a - b*x**3)*(-sqrt(3)*a**(1/3) + a**(1/3) + b**(1/3
)*x)), x)

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Giac [F(-1)] Timed out
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Timed out} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b^(1/3)*x+a^(1/3)*(1+3^(1/2)))/(b^(1/3)*x+a^(1/3)*(1-3^(1/2)))/(-b*x^3-a)^(1/2),x, algorithm="giac"
)

[Out]

Timed out

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Mupad [F(-1)]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \text {Hanged} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b^(1/3)*x + a^(1/3)*(3^(1/2) + 1))/((- a - b*x^3)^(1/2)*(b^(1/3)*x - a^(1/3)*(3^(1/2) - 1))),x)

[Out]

\text{Hanged}

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