Integrand size = 19, antiderivative size = 617 \[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=-\frac {3 \sqrt [3]{c+d x}}{5 b (a+b x)^{5/3}}-\frac {3 d \sqrt [3]{c+d x}}{10 b (b c-a d) (a+b x)^{2/3}}-\frac {3^{3/4} \sqrt {2+\sqrt {3}} d^{5/3} ((a+b x) (c+d x))^{2/3} \sqrt {(b c+a d+2 b d x)^2} \left ((b c-a d)^{2/3}+2^{2/3} \sqrt [3]{b} \sqrt [3]{d} \sqrt [3]{(a+b x) (c+d x)}\right ) \sqrt {\frac {(b c-a d)^{4/3}-2^{2/3} \sqrt [3]{b} \sqrt [3]{d} (b c-a d)^{2/3} \sqrt [3]{(a+b x) (c+d x)}+2 \sqrt [3]{2} b^{2/3} d^{2/3} ((a+b x) (c+d x))^{2/3}}{\left (\left (1+\sqrt {3}\right ) (b c-a d)^{2/3}+2^{2/3} \sqrt [3]{b} \sqrt [3]{d} \sqrt [3]{(a+b x) (c+d x)}\right )^2}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\left (1-\sqrt {3}\right ) (b c-a d)^{2/3}+2^{2/3} \sqrt [3]{b} \sqrt [3]{d} \sqrt [3]{(a+b x) (c+d x)}}{\left (1+\sqrt {3}\right ) (b c-a d)^{2/3}+2^{2/3} \sqrt [3]{b} \sqrt [3]{d} \sqrt [3]{(a+b x) (c+d x)}}\right ),-7-4 \sqrt {3}\right )}{5\ 2^{2/3} b^{4/3} (b c-a d) (a+b x)^{2/3} (c+d x)^{2/3} (b c+a d+2 b d x) \sqrt {\frac {(b c-a d)^{2/3} \left ((b c-a d)^{2/3}+2^{2/3} \sqrt [3]{b} \sqrt [3]{d} \sqrt [3]{(a+b x) (c+d x)}\right )}{\left (\left (1+\sqrt {3}\right ) (b c-a d)^{2/3}+2^{2/3} \sqrt [3]{b} \sqrt [3]{d} \sqrt [3]{(a+b x) (c+d x)}\right )^2}} \sqrt {(a d+b (c+2 d x))^2}} \]
-3/5*(d*x+c)^(1/3)/b/(b*x+a)^(5/3)-3/10*d*(d*x+c)^(1/3)/b/(-a*d+b*c)/(b*x+ a)^(2/3)-1/10*3^(3/4)*d^(5/3)*((b*x+a)*(d*x+c))^(2/3)*((-a*d+b*c)^(2/3)+2^ (2/3)*b^(1/3)*d^(1/3)*((b*x+a)*(d*x+c))^(1/3))*EllipticF((2^(2/3)*b^(1/3)* d^(1/3)*((b*x+a)*(d*x+c))^(1/3)+(-a*d+b*c)^(2/3)*(1-3^(1/2)))/(2^(2/3)*b^( 1/3)*d^(1/3)*((b*x+a)*(d*x+c))^(1/3)+(-a*d+b*c)^(2/3)*(1+3^(1/2))),I*3^(1/ 2)+2*I)*((2*b*d*x+a*d+b*c)^2)^(1/2)*(1/2*6^(1/2)+1/2*2^(1/2))*(((-a*d+b*c) ^(4/3)-2^(2/3)*b^(1/3)*d^(1/3)*(-a*d+b*c)^(2/3)*((b*x+a)*(d*x+c))^(1/3)+2* 2^(1/3)*b^(2/3)*d^(2/3)*((b*x+a)*(d*x+c))^(2/3))/(2^(2/3)*b^(1/3)*d^(1/3)* ((b*x+a)*(d*x+c))^(1/3)+(-a*d+b*c)^(2/3)*(1+3^(1/2)))^2)^(1/2)*2^(1/3)/b^( 4/3)/(-a*d+b*c)/(b*x+a)^(2/3)/(d*x+c)^(2/3)/(2*b*d*x+a*d+b*c)/((a*d+b*(2*d *x+c))^2)^(1/2)/((-a*d+b*c)^(2/3)*((-a*d+b*c)^(2/3)+2^(2/3)*b^(1/3)*d^(1/3 )*((b*x+a)*(d*x+c))^(1/3))/(2^(2/3)*b^(1/3)*d^(1/3)*((b*x+a)*(d*x+c))^(1/3 )+(-a*d+b*c)^(2/3)*(1+3^(1/2)))^2)^(1/2)
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 0.02 (sec) , antiderivative size = 73, normalized size of antiderivative = 0.12 \[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=-\frac {3 \sqrt [3]{c+d x} \operatorname {Hypergeometric2F1}\left (-\frac {5}{3},-\frac {1}{3},-\frac {2}{3},\frac {d (a+b x)}{-b c+a d}\right )}{5 b (a+b x)^{5/3} \sqrt [3]{\frac {b (c+d x)}{b c-a d}}} \]
(-3*(c + d*x)^(1/3)*Hypergeometric2F1[-5/3, -1/3, -2/3, (d*(a + b*x))/(-(b *c) + a*d)])/(5*b*(a + b*x)^(5/3)*((b*(c + d*x))/(b*c - a*d))^(1/3))
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 0.17 (sec) , antiderivative size = 74, normalized size of antiderivative = 0.12, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.105, Rules used = {80, 79}
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.
\(\displaystyle \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx\) |
\(\Big \downarrow \) 80 |
\(\displaystyle \frac {\sqrt [3]{c+d x} \int \frac {\sqrt [3]{\frac {b c}{b c-a d}+\frac {b d x}{b c-a d}}}{(a+b x)^{8/3}}dx}{\sqrt [3]{\frac {b (c+d x)}{b c-a d}}}\) |
\(\Big \downarrow \) 79 |
\(\displaystyle -\frac {3 \sqrt [3]{c+d x} \operatorname {Hypergeometric2F1}\left (-\frac {5}{3},-\frac {1}{3},-\frac {2}{3},-\frac {d (a+b x)}{b c-a d}\right )}{5 b (a+b x)^{5/3} \sqrt [3]{\frac {b (c+d x)}{b c-a d}}}\) |
(-3*(c + d*x)^(1/3)*Hypergeometric2F1[-5/3, -1/3, -2/3, -((d*(a + b*x))/(b *c - a*d))])/(5*b*(a + b*x)^(5/3)*((b*(c + d*x))/(b*c - a*d))^(1/3))
3.16.86.3.1 Defintions of rubi rules used
Int[((a_) + (b_.)*(x_))^(m_)*((c_) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[(( a + b*x)^(m + 1)/(b*(m + 1)*(b/(b*c - a*d))^n))*Hypergeometric2F1[-n, m + 1 , m + 2, (-d)*((a + b*x)/(b*c - a*d))], x] /; FreeQ[{a, b, c, d, m, n}, x] && !IntegerQ[m] && !IntegerQ[n] && GtQ[b/(b*c - a*d), 0] && (RationalQ[m] || !(RationalQ[n] && GtQ[-d/(b*c - a*d), 0]))
Int[((a_) + (b_.)*(x_))^(m_)*((c_) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[(c + d*x)^FracPart[n]/((b/(b*c - a*d))^IntPart[n]*(b*((c + d*x)/(b*c - a*d))) ^FracPart[n]) Int[(a + b*x)^m*Simp[b*(c/(b*c - a*d)) + b*d*(x/(b*c - a*d) ), x]^n, x], x] /; FreeQ[{a, b, c, d, m, n}, x] && !IntegerQ[m] && !Integ erQ[n] && (RationalQ[m] || !SimplerQ[n + 1, m + 1])
\[\int \frac {\left (d x +c \right )^{\frac {1}{3}}}{\left (b x +a \right )^{\frac {8}{3}}}d x\]
\[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=\int { \frac {{\left (d x + c\right )}^{\frac {1}{3}}}{{\left (b x + a\right )}^{\frac {8}{3}}} \,d x } \]
\[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=\int \frac {\sqrt [3]{c + d x}}{\left (a + b x\right )^{\frac {8}{3}}}\, dx \]
\[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=\int { \frac {{\left (d x + c\right )}^{\frac {1}{3}}}{{\left (b x + a\right )}^{\frac {8}{3}}} \,d x } \]
\[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=\int { \frac {{\left (d x + c\right )}^{\frac {1}{3}}}{{\left (b x + a\right )}^{\frac {8}{3}}} \,d x } \]
Timed out. \[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=\int \frac {{\left (c+d\,x\right )}^{1/3}}{{\left (a+b\,x\right )}^{8/3}} \,d x \]
\[ \int \frac {\sqrt [3]{c+d x}}{(a+b x)^{8/3}} \, dx=\int \frac {\left (d x +c \right )^{\frac {1}{3}}}{\left (b x +a \right )^{\frac {2}{3}} \left (b^{2} x^{2}+2 a b x +a^{2}\right )}d x \]