\(\int \frac {(c x)^{13/3}}{(a+b x^2)^{2/3}} \, dx\) [820]

Optimal result

Integrand size = 19, antiderivative size = 167 \[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=-\frac {5 a c^3 (c x)^{4/3} \sqrt [3]{a+b x^2}}{12 b^2}+\frac {c (c x)^{10/3} \sqrt [3]{a+b x^2}}{4 b}-\frac {5 a^2 c^{13/3} \arctan \left (\frac {1+\frac {2 \sqrt [3]{b} (c x)^{2/3}}{c^{2/3} \sqrt [3]{a+b x^2}}}{\sqrt {3}}\right )}{6 \sqrt {3} b^{8/3}}-\frac {5 a^2 c^{13/3} \log \left (\sqrt [3]{b} (c x)^{2/3}-c^{2/3} \sqrt [3]{a+b x^2}\right )}{12 b^{8/3}} \] Output:

-5/12*a*c^3*(c*x)^(4/3)*(b*x^2+a)^(1/3)/b^2+1/4*c*(c*x)^(10/3)*(b*x^2+a)^( 
1/3)/b-5/18*a^2*c^(13/3)*arctan(1/3*(1+2*b^(1/3)*(c*x)^(2/3)/c^(2/3)/(b*x^ 
2+a)^(1/3))*3^(1/2))*3^(1/2)/b^(8/3)-5/12*a^2*c^(13/3)*ln(b^(1/3)*(c*x)^(2 
/3)-c^(2/3)*(b*x^2+a)^(1/3))/b^(8/3)
 

Mathematica [A] (verified)

Time = 2.45 (sec) , antiderivative size = 207, normalized size of antiderivative = 1.24 \[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=\frac {c^4 \sqrt [3]{c x} \left (-15 a b^{2/3} x^{4/3} \sqrt [3]{a+b x^2}+9 b^{5/3} x^{10/3} \sqrt [3]{a+b x^2}-10 \sqrt {3} a^2 \arctan \left (\frac {\sqrt {3} \sqrt [3]{b} x^{2/3}}{\sqrt [3]{b} x^{2/3}+2 \sqrt [3]{a+b x^2}}\right )-10 a^2 \log \left (-\sqrt [3]{b} x^{2/3}+\sqrt [3]{a+b x^2}\right )+5 a^2 \log \left (b^{2/3} x^{4/3}+\sqrt [3]{b} x^{2/3} \sqrt [3]{a+b x^2}+\left (a+b x^2\right )^{2/3}\right )\right )}{36 b^{8/3} \sqrt [3]{x}} \] Input:

Integrate[(c*x)^(13/3)/(a + b*x^2)^(2/3),x]
 

Output:

(c^4*(c*x)^(1/3)*(-15*a*b^(2/3)*x^(4/3)*(a + b*x^2)^(1/3) + 9*b^(5/3)*x^(1 
0/3)*(a + b*x^2)^(1/3) - 10*Sqrt[3]*a^2*ArcTan[(Sqrt[3]*b^(1/3)*x^(2/3))/( 
b^(1/3)*x^(2/3) + 2*(a + b*x^2)^(1/3))] - 10*a^2*Log[-(b^(1/3)*x^(2/3)) + 
(a + b*x^2)^(1/3)] + 5*a^2*Log[b^(2/3)*x^(4/3) + b^(1/3)*x^(2/3)*(a + b*x^ 
2)^(1/3) + (a + b*x^2)^(2/3)]))/(36*b^(8/3)*x^(1/3))
 

Rubi [A] (warning: unable to verify)

Time = 0.29 (sec) , antiderivative size = 178, normalized size of antiderivative = 1.07, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.263, Rules used = {262, 262, 266, 807, 853}

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.

\(\displaystyle \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx\)

\(\Big \downarrow \) 262

\(\displaystyle \frac {c (c x)^{10/3} \sqrt [3]{a+b x^2}}{4 b}-\frac {5 a c^2 \int \frac {(c x)^{7/3}}{\left (b x^2+a\right )^{2/3}}dx}{6 b}\)

\(\Big \downarrow \) 262

\(\displaystyle \frac {c (c x)^{10/3} \sqrt [3]{a+b x^2}}{4 b}-\frac {5 a c^2 \left (\frac {c (c x)^{4/3} \sqrt [3]{a+b x^2}}{2 b}-\frac {2 a c^2 \int \frac {\sqrt [3]{c x}}{\left (b x^2+a\right )^{2/3}}dx}{3 b}\right )}{6 b}\)

\(\Big \downarrow \) 266

\(\displaystyle \frac {c (c x)^{10/3} \sqrt [3]{a+b x^2}}{4 b}-\frac {5 a c^2 \left (\frac {c (c x)^{4/3} \sqrt [3]{a+b x^2}}{2 b}-\frac {2 a c \int \frac {c x}{\left (b x^2+a\right )^{2/3}}d\sqrt [3]{c x}}{b}\right )}{6 b}\)

\(\Big \downarrow \) 807

\(\displaystyle \frac {c (c x)^{10/3} \sqrt [3]{a+b x^2}}{4 b}-\frac {5 a c^2 \left (\frac {c (c x)^{4/3} \sqrt [3]{a+b x^2}}{2 b}-\frac {a c \int \frac {(c x)^{2/3}}{\left (a+\frac {b x}{c}\right )^{2/3}}d(c x)^{2/3}}{b}\right )}{6 b}\)

\(\Big \downarrow \) 853

\(\displaystyle \frac {c (c x)^{10/3} \sqrt [3]{a+b x^2}}{4 b}-\frac {5 a c^2 \left (\frac {c (c x)^{4/3} \sqrt [3]{a+b x^2}}{2 b}-\frac {a c \left (-\frac {c^{4/3} \arctan \left (\frac {\frac {2 \sqrt [3]{b} (c x)^{2/3}}{c^{2/3} \sqrt [3]{a+\frac {b x}{c}}}+1}{\sqrt {3}}\right )}{\sqrt {3} b^{2/3}}-\frac {c^{4/3} \log \left (\frac {\sqrt [3]{b} (c x)^{2/3}}{c^{2/3}}-\sqrt [3]{a+\frac {b x}{c}}\right )}{2 b^{2/3}}\right )}{b}\right )}{6 b}\)

Input:

Int[(c*x)^(13/3)/(a + b*x^2)^(2/3),x]
 

Output:

(c*(c*x)^(10/3)*(a + b*x^2)^(1/3))/(4*b) - (5*a*c^2*((c*(c*x)^(4/3)*(a + b 
*x^2)^(1/3))/(2*b) - (a*c*(-((c^(4/3)*ArcTan[(1 + (2*b^(1/3)*(c*x)^(2/3))/ 
(c^(2/3)*(a + (b*x)/c)^(1/3)))/Sqrt[3]])/(Sqrt[3]*b^(2/3))) - (c^(4/3)*Log 
[(b^(1/3)*(c*x)^(2/3))/c^(2/3) - (a + (b*x)/c)^(1/3)])/(2*b^(2/3))))/b))/( 
6*b)
 

Defintions of rubi rules used

rule 262

Int[((c_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> Simp[c*(c*x) 
^(m - 1)*((a + b*x^2)^(p + 1)/(b*(m + 2*p + 1))), x] - Simp[a*c^2*((m - 1)/ 
(b*(m + 2*p + 1)))   Int[(c*x)^(m - 2)*(a + b*x^2)^p, x], x] /; FreeQ[{a, b 
, c, p}, x] && GtQ[m, 2 - 1] && NeQ[m + 2*p + 1, 0] && IntBinomialQ[a, b, c 
, 2, m, p, x]
 

rule 266

Int[((c_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> With[{k = De 
nominator[m]}, Simp[k/c   Subst[Int[x^(k*(m + 1) - 1)*(a + b*(x^(2*k)/c^2)) 
^p, x], x, (c*x)^(1/k)], x]] /; FreeQ[{a, b, c, p}, x] && FractionQ[m] && I 
ntBinomialQ[a, b, c, 2, m, p, x]
 

rule 807

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> With[{k = GCD[m 
+ 1, n]}, Simp[1/k   Subst[Int[x^((m + 1)/k - 1)*(a + b*x^(n/k))^p, x], x, 
x^k], x] /; k != 1] /; FreeQ[{a, b, p}, x] && IGtQ[n, 0] && IntegerQ[m]
 

rule 853

Int[(x_)/((a_) + (b_.)*(x_)^3)^(2/3), x_Symbol] :> With[{q = Rt[b, 3]}, Sim 
p[-ArcTan[(1 + 2*q*(x/(a + b*x^3)^(1/3)))/Sqrt[3]]/(Sqrt[3]*q^2), x] - Simp 
[Log[q*x - (a + b*x^3)^(1/3)]/(2*q^2), x]] /; FreeQ[{a, b}, x]
 

Maple [F]

\[\int \frac {\left (c x \right )^{\frac {13}{3}}}{\left (b \,x^{2}+a \right )^{\frac {2}{3}}}d x\]

Input:

int((c*x)^(13/3)/(b*x^2+a)^(2/3),x)
 

Output:

int((c*x)^(13/3)/(b*x^2+a)^(2/3),x)
 

Fricas [F(-1)]

Timed out. \[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=\text {Timed out} \] Input:

integrate((c*x)^(13/3)/(b*x^2+a)^(2/3),x, algorithm="fricas")
 

Output:

Timed out
 

Sympy [F(-1)]

Timed out. \[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=\text {Timed out} \] Input:

integrate((c*x)**(13/3)/(b*x**2+a)**(2/3),x)
 

Output:

Timed out
 

Maxima [F]

\[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=\int { \frac {\left (c x\right )^{\frac {13}{3}}}{{\left (b x^{2} + a\right )}^{\frac {2}{3}}} \,d x } \] Input:

integrate((c*x)^(13/3)/(b*x^2+a)^(2/3),x, algorithm="maxima")
 

Output:

integrate((c*x)^(13/3)/(b*x^2 + a)^(2/3), x)
 

Giac [F]

\[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=\int { \frac {\left (c x\right )^{\frac {13}{3}}}{{\left (b x^{2} + a\right )}^{\frac {2}{3}}} \,d x } \] Input:

integrate((c*x)^(13/3)/(b*x^2+a)^(2/3),x, algorithm="giac")
 

Output:

integrate((c*x)^(13/3)/(b*x^2 + a)^(2/3), x)
 

Mupad [F(-1)]

Timed out. \[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=\int \frac {{\left (c\,x\right )}^{13/3}}{{\left (b\,x^2+a\right )}^{2/3}} \,d x \] Input:

int((c*x)^(13/3)/(a + b*x^2)^(2/3),x)
 

Output:

int((c*x)^(13/3)/(a + b*x^2)^(2/3), x)
 

Reduce [F]

\[ \int \frac {(c x)^{13/3}}{\left (a+b x^2\right )^{2/3}} \, dx=c^{\frac {13}{3}} \left (\int \frac {x^{\frac {13}{3}}}{\left (b \,x^{2}+a \right )^{\frac {2}{3}}}d x \right ) \] Input:

int((c*x)^(13/3)/(b*x^2+a)^(2/3),x)
 

Output:

c**(1/3)*int((x**(1/3)*x**4)/(a + b*x**2)**(2/3),x)*c**4