Integrand size = 22, antiderivative size = 93 \[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx=-\frac {c \left (a+b x^4\right )^{3/4}}{4 a x^4}-\frac {(b c-4 a d) \arctan \left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )}{8 a^{5/4}}+\frac {(b c-4 a d) \text {arctanh}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )}{8 a^{5/4}} \] Output:
-1/4*c*(b*x^4+a)^(3/4)/a/x^4-1/8*(-4*a*d+b*c)*arctan((b*x^4+a)^(1/4)/a^(1/ 4))/a^(5/4)+1/8*(-4*a*d+b*c)*arctanh((b*x^4+a)^(1/4)/a^(1/4))/a^(5/4)
Time = 0.19 (sec) , antiderivative size = 94, normalized size of antiderivative = 1.01 \[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx=-\frac {c \left (a+b x^4\right )^{3/4}}{4 a x^4}+\frac {(-b c+4 a d) \arctan \left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )}{8 a^{5/4}}+\frac {(b c-4 a d) \text {arctanh}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )}{8 a^{5/4}} \] Input:
Integrate[(c + d*x^4)/(x^5*(a + b*x^4)^(1/4)),x]
Output:
-1/4*(c*(a + b*x^4)^(3/4))/(a*x^4) + ((-(b*c) + 4*a*d)*ArcTan[(a + b*x^4)^ (1/4)/a^(1/4)])/(8*a^(5/4)) + ((b*c - 4*a*d)*ArcTanh[(a + b*x^4)^(1/4)/a^( 1/4)])/(8*a^(5/4))
Time = 0.37 (sec) , antiderivative size = 92, normalized size of antiderivative = 0.99, number of steps used = 9, number of rules used = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.364, Rules used = {948, 87, 73, 25, 27, 827, 216, 219}
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.
\(\displaystyle \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx\) |
\(\Big \downarrow \) 948 |
\(\displaystyle \frac {1}{4} \int \frac {d x^4+c}{x^8 \sqrt [4]{b x^4+a}}dx^4\) |
\(\Big \downarrow \) 87 |
\(\displaystyle \frac {1}{4} \left (-\frac {(b c-4 a d) \int \frac {1}{x^4 \sqrt [4]{b x^4+a}}dx^4}{4 a}-\frac {c \left (a+b x^4\right )^{3/4}}{a x^4}\right )\) |
\(\Big \downarrow \) 73 |
\(\displaystyle \frac {1}{4} \left (-\frac {(b c-4 a d) \int -\frac {b x^8}{a-x^{16}}d\sqrt [4]{b x^4+a}}{a b}-\frac {c \left (a+b x^4\right )^{3/4}}{a x^4}\right )\) |
\(\Big \downarrow \) 25 |
\(\displaystyle \frac {1}{4} \left (\frac {(b c-4 a d) \int \frac {b x^8}{a-x^{16}}d\sqrt [4]{b x^4+a}}{a b}-\frac {c \left (a+b x^4\right )^{3/4}}{a x^4}\right )\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {1}{4} \left (\frac {(b c-4 a d) \int \frac {x^8}{a-x^{16}}d\sqrt [4]{b x^4+a}}{a}-\frac {c \left (a+b x^4\right )^{3/4}}{a x^4}\right )\) |
\(\Big \downarrow \) 827 |
\(\displaystyle \frac {1}{4} \left (\frac {(b c-4 a d) \left (\frac {1}{2} \int \frac {1}{\sqrt {a}-x^8}d\sqrt [4]{b x^4+a}-\frac {1}{2} \int \frac {1}{x^8+\sqrt {a}}d\sqrt [4]{b x^4+a}\right )}{a}-\frac {c \left (a+b x^4\right )^{3/4}}{a x^4}\right )\) |
\(\Big \downarrow \) 216 |
\(\displaystyle \frac {1}{4} \left (\frac {(b c-4 a d) \left (\frac {1}{2} \int \frac {1}{\sqrt {a}-x^8}d\sqrt [4]{b x^4+a}-\frac {\arctan \left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )}{2 \sqrt [4]{a}}\right )}{a}-\frac {c \left (a+b x^4\right )^{3/4}}{a x^4}\right )\) |
\(\Big \downarrow \) 219 |
\(\displaystyle \frac {1}{4} \left (\frac {(b c-4 a d) \left (\frac {\text {arctanh}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )}{2 \sqrt [4]{a}}-\frac {\arctan \left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )}{2 \sqrt [4]{a}}\right )}{a}-\frac {c \left (a+b x^4\right )^{3/4}}{a x^4}\right )\) |
Input:
Int[(c + d*x^4)/(x^5*(a + b*x^4)^(1/4)),x]
Output:
(-((c*(a + b*x^4)^(3/4))/(a*x^4)) + ((b*c - 4*a*d)*(-1/2*ArcTan[(a + b*x^4 )^(1/4)/a^(1/4)]/a^(1/4) + ArcTanh[(a + b*x^4)^(1/4)/a^(1/4)]/(2*a^(1/4))) )/a)/4
Int[(a_)*(Fx_), x_Symbol] :> Simp[a Int[Fx, x], x] /; FreeQ[a, x] && !Ma tchQ[Fx, (b_)*(Gx_) /; FreeQ[b, x]]
Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> With[ {p = Denominator[m]}, Simp[p/b Subst[Int[x^(p*(m + 1) - 1)*(c - a*(d/b) + d*(x^p/b))^n, x], x, (a + b*x)^(1/p)], x]] /; FreeQ[{a, b, c, d}, x] && Lt Q[-1, m, 0] && LeQ[-1, n, 0] && LeQ[Denominator[n], Denominator[m]] && IntL inearQ[a, b, c, d, m, n, x]
Int[((a_.) + (b_.)*(x_))*((c_.) + (d_.)*(x_))^(n_.)*((e_.) + (f_.)*(x_))^(p _.), x_] :> Simp[(-(b*e - a*f))*(c + d*x)^(n + 1)*((e + f*x)^(p + 1)/(f*(p + 1)*(c*f - d*e))), x] - Simp[(a*d*f*(n + p + 2) - b*(d*e*(n + 1) + c*f*(p + 1)))/(f*(p + 1)*(c*f - d*e)) Int[(c + d*x)^n*(e + f*x)^(p + 1), x], x] /; FreeQ[{a, b, c, d, e, f, n}, x] && LtQ[p, -1] && ( !LtQ[n, -1] || Intege rQ[p] || !(IntegerQ[n] || !(EqQ[e, 0] || !(EqQ[c, 0] || LtQ[p, n]))))
Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(1/(Rt[a, 2]*Rt[b, 2]))*A rcTan[Rt[b, 2]*(x/Rt[a, 2])], x] /; FreeQ[{a, b}, x] && PosQ[a/b] && (GtQ[a , 0] || GtQ[b, 0])
Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(1/(Rt[a, 2]*Rt[-b, 2]))* ArcTanh[Rt[-b, 2]*(x/Rt[a, 2])], x] /; FreeQ[{a, b}, x] && NegQ[a/b] && (Gt Q[a, 0] || LtQ[b, 0])
Int[(x_)^2/((a_) + (b_.)*(x_)^4), x_Symbol] :> With[{r = Numerator[Rt[-a/b, 2]], s = Denominator[Rt[-a/b, 2]]}, Simp[s/(2*b) Int[1/(r + s*x^2), x], x] - Simp[s/(2*b) Int[1/(r - s*x^2), x], x]] /; FreeQ[{a, b}, x] && !GtQ [a/b, 0]
Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_.)*((c_) + (d_.)*(x_)^(n_))^(q_. ), x_Symbol] :> Simp[1/n Subst[Int[x^(Simplify[(m + 1)/n] - 1)*(a + b*x)^ p*(c + d*x)^q, x], x, x^n], x] /; FreeQ[{a, b, c, d, m, n, p, q}, x] && NeQ [b*c - a*d, 0] && IntegerQ[Simplify[(m + 1)/n]]
Time = 0.09 (sec) , antiderivative size = 85, normalized size of antiderivative = 0.91
method | result | size |
pseudoelliptic | \(-\frac {c \left (b \,x^{4}+a \right )^{\frac {3}{4}} a^{\frac {1}{4}}+\left (\ln \left (\frac {\left (b \,x^{4}+a \right )^{\frac {1}{4}}+a^{\frac {1}{4}}}{\left (b \,x^{4}+a \right )^{\frac {1}{4}}-a^{\frac {1}{4}}}\right )-2 \arctan \left (\frac {\left (b \,x^{4}+a \right )^{\frac {1}{4}}}{a^{\frac {1}{4}}}\right )\right ) \left (a d -\frac {c b}{4}\right ) x^{4}}{4 a^{\frac {5}{4}} x^{4}}\) | \(85\) |
Input:
int((d*x^4+c)/x^5/(b*x^4+a)^(1/4),x,method=_RETURNVERBOSE)
Output:
-1/4*(c*(b*x^4+a)^(3/4)*a^(1/4)+(ln(((b*x^4+a)^(1/4)+a^(1/4))/((b*x^4+a)^( 1/4)-a^(1/4)))-2*arctan((b*x^4+a)^(1/4)/a^(1/4)))*(a*d-1/4*c*b)*x^4)/a^(5/ 4)/x^4
Result contains complex when optimal does not.
Time = 0.13 (sec) , antiderivative size = 707, normalized size of antiderivative = 7.60 \[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx =\text {Too large to display} \] Input:
integrate((d*x^4+c)/x^5/(b*x^4+a)^(1/4),x, algorithm="fricas")
Output:
-1/16*(a*x^4*((b^4*c^4 - 16*a*b^3*c^3*d + 96*a^2*b^2*c^2*d^2 - 256*a^3*b*c *d^3 + 256*a^4*d^4)/a^5)^(1/4)*log(a^4*((b^4*c^4 - 16*a*b^3*c^3*d + 96*a^2 *b^2*c^2*d^2 - 256*a^3*b*c*d^3 + 256*a^4*d^4)/a^5)^(3/4) - (b^3*c^3 - 12*a *b^2*c^2*d + 48*a^2*b*c*d^2 - 64*a^3*d^3)*(b*x^4 + a)^(1/4)) - I*a*x^4*((b ^4*c^4 - 16*a*b^3*c^3*d + 96*a^2*b^2*c^2*d^2 - 256*a^3*b*c*d^3 + 256*a^4*d ^4)/a^5)^(1/4)*log(I*a^4*((b^4*c^4 - 16*a*b^3*c^3*d + 96*a^2*b^2*c^2*d^2 - 256*a^3*b*c*d^3 + 256*a^4*d^4)/a^5)^(3/4) - (b^3*c^3 - 12*a*b^2*c^2*d + 4 8*a^2*b*c*d^2 - 64*a^3*d^3)*(b*x^4 + a)^(1/4)) + I*a*x^4*((b^4*c^4 - 16*a* b^3*c^3*d + 96*a^2*b^2*c^2*d^2 - 256*a^3*b*c*d^3 + 256*a^4*d^4)/a^5)^(1/4) *log(-I*a^4*((b^4*c^4 - 16*a*b^3*c^3*d + 96*a^2*b^2*c^2*d^2 - 256*a^3*b*c* d^3 + 256*a^4*d^4)/a^5)^(3/4) - (b^3*c^3 - 12*a*b^2*c^2*d + 48*a^2*b*c*d^2 - 64*a^3*d^3)*(b*x^4 + a)^(1/4)) - a*x^4*((b^4*c^4 - 16*a*b^3*c^3*d + 96* a^2*b^2*c^2*d^2 - 256*a^3*b*c*d^3 + 256*a^4*d^4)/a^5)^(1/4)*log(-a^4*((b^4 *c^4 - 16*a*b^3*c^3*d + 96*a^2*b^2*c^2*d^2 - 256*a^3*b*c*d^3 + 256*a^4*d^4 )/a^5)^(3/4) - (b^3*c^3 - 12*a*b^2*c^2*d + 48*a^2*b*c*d^2 - 64*a^3*d^3)*(b *x^4 + a)^(1/4)) + 4*(b*x^4 + a)^(3/4)*c)/(a*x^4)
Result contains complex when optimal does not.
Time = 19.52 (sec) , antiderivative size = 80, normalized size of antiderivative = 0.86 \[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx=- \frac {c \Gamma \left (\frac {5}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{4}, \frac {5}{4} \\ \frac {9}{4} \end {matrix}\middle | {\frac {a e^{i \pi }}{b x^{4}}} \right )}}{4 \sqrt [4]{b} x^{5} \Gamma \left (\frac {9}{4}\right )} - \frac {d \Gamma \left (\frac {1}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{4}, \frac {1}{4} \\ \frac {5}{4} \end {matrix}\middle | {\frac {a e^{i \pi }}{b x^{4}}} \right )}}{4 \sqrt [4]{b} x \Gamma \left (\frac {5}{4}\right )} \] Input:
integrate((d*x**4+c)/x**5/(b*x**4+a)**(1/4),x)
Output:
-c*gamma(5/4)*hyper((1/4, 5/4), (9/4,), a*exp_polar(I*pi)/(b*x**4))/(4*b** (1/4)*x**5*gamma(9/4)) - d*gamma(1/4)*hyper((1/4, 1/4), (5/4,), a*exp_pola r(I*pi)/(b*x**4))/(4*b**(1/4)*x*gamma(5/4))
Leaf count of result is larger than twice the leaf count of optimal. 154 vs. \(2 (73) = 146\).
Time = 0.11 (sec) , antiderivative size = 154, normalized size of antiderivative = 1.66 \[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx=-\frac {1}{16} \, c {\left (\frac {b {\left (\frac {2 \, \arctan \left (\frac {{\left (b x^{4} + a\right )}^{\frac {1}{4}}}{a^{\frac {1}{4}}}\right )}{a^{\frac {1}{4}}} + \frac {\log \left (\frac {{\left (b x^{4} + a\right )}^{\frac {1}{4}} - a^{\frac {1}{4}}}{{\left (b x^{4} + a\right )}^{\frac {1}{4}} + a^{\frac {1}{4}}}\right )}{a^{\frac {1}{4}}}\right )}}{a} + \frac {4 \, {\left (b x^{4} + a\right )}^{\frac {3}{4}} b}{{\left (b x^{4} + a\right )} a - a^{2}}\right )} + \frac {1}{4} \, d {\left (\frac {2 \, \arctan \left (\frac {{\left (b x^{4} + a\right )}^{\frac {1}{4}}}{a^{\frac {1}{4}}}\right )}{a^{\frac {1}{4}}} + \frac {\log \left (\frac {{\left (b x^{4} + a\right )}^{\frac {1}{4}} - a^{\frac {1}{4}}}{{\left (b x^{4} + a\right )}^{\frac {1}{4}} + a^{\frac {1}{4}}}\right )}{a^{\frac {1}{4}}}\right )} \] Input:
integrate((d*x^4+c)/x^5/(b*x^4+a)^(1/4),x, algorithm="maxima")
Output:
-1/16*c*(b*(2*arctan((b*x^4 + a)^(1/4)/a^(1/4))/a^(1/4) + log(((b*x^4 + a) ^(1/4) - a^(1/4))/((b*x^4 + a)^(1/4) + a^(1/4)))/a^(1/4))/a + 4*(b*x^4 + a )^(3/4)*b/((b*x^4 + a)*a - a^2)) + 1/4*d*(2*arctan((b*x^4 + a)^(1/4)/a^(1/ 4))/a^(1/4) + log(((b*x^4 + a)^(1/4) - a^(1/4))/((b*x^4 + a)^(1/4) + a^(1/ 4)))/a^(1/4))
Leaf count of result is larger than twice the leaf count of optimal. 253 vs. \(2 (73) = 146\).
Time = 0.13 (sec) , antiderivative size = 253, normalized size of antiderivative = 2.72 \[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx=-\frac {1}{32} \, b {\left (\frac {2 \, \sqrt {2} {\left (b c - 4 \, a d\right )} \arctan \left (\frac {\sqrt {2} {\left (\sqrt {2} \left (-a\right )^{\frac {1}{4}} + 2 \, {\left (b x^{4} + a\right )}^{\frac {1}{4}}\right )}}{2 \, \left (-a\right )^{\frac {1}{4}}}\right )}{\left (-a\right )^{\frac {1}{4}} a b} + \frac {2 \, \sqrt {2} {\left (b c - 4 \, a d\right )} \arctan \left (-\frac {\sqrt {2} {\left (\sqrt {2} \left (-a\right )^{\frac {1}{4}} - 2 \, {\left (b x^{4} + a\right )}^{\frac {1}{4}}\right )}}{2 \, \left (-a\right )^{\frac {1}{4}}}\right )}{\left (-a\right )^{\frac {1}{4}} a b} - \frac {\sqrt {2} {\left (b c - 4 \, a d\right )} \log \left (\sqrt {2} {\left (b x^{4} + a\right )}^{\frac {1}{4}} \left (-a\right )^{\frac {1}{4}} + \sqrt {b x^{4} + a} + \sqrt {-a}\right )}{\left (-a\right )^{\frac {1}{4}} a b} + \frac {\sqrt {2} {\left (b c - 4 \, a d\right )} \log \left (-\sqrt {2} {\left (b x^{4} + a\right )}^{\frac {1}{4}} \left (-a\right )^{\frac {1}{4}} + \sqrt {b x^{4} + a} + \sqrt {-a}\right )}{\left (-a\right )^{\frac {1}{4}} a b} + \frac {8 \, {\left (b x^{4} + a\right )}^{\frac {3}{4}} c}{a b x^{4}}\right )} \] Input:
integrate((d*x^4+c)/x^5/(b*x^4+a)^(1/4),x, algorithm="giac")
Output:
-1/32*b*(2*sqrt(2)*(b*c - 4*a*d)*arctan(1/2*sqrt(2)*(sqrt(2)*(-a)^(1/4) + 2*(b*x^4 + a)^(1/4))/(-a)^(1/4))/((-a)^(1/4)*a*b) + 2*sqrt(2)*(b*c - 4*a*d )*arctan(-1/2*sqrt(2)*(sqrt(2)*(-a)^(1/4) - 2*(b*x^4 + a)^(1/4))/(-a)^(1/4 ))/((-a)^(1/4)*a*b) - sqrt(2)*(b*c - 4*a*d)*log(sqrt(2)*(b*x^4 + a)^(1/4)* (-a)^(1/4) + sqrt(b*x^4 + a) + sqrt(-a))/((-a)^(1/4)*a*b) + sqrt(2)*(b*c - 4*a*d)*log(-sqrt(2)*(b*x^4 + a)^(1/4)*(-a)^(1/4) + sqrt(b*x^4 + a) + sqrt (-a))/((-a)^(1/4)*a*b) + 8*(b*x^4 + a)^(3/4)*c/(a*b*x^4))
Time = 4.45 (sec) , antiderivative size = 101, normalized size of antiderivative = 1.09 \[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx=\frac {d\,\mathrm {atan}\left (\frac {{\left (b\,x^4+a\right )}^{1/4}}{a^{1/4}}\right )}{2\,a^{1/4}}-\frac {d\,\mathrm {atanh}\left (\frac {{\left (b\,x^4+a\right )}^{1/4}}{a^{1/4}}\right )}{2\,a^{1/4}}-\frac {c\,{\left (b\,x^4+a\right )}^{3/4}}{4\,a\,x^4}-\frac {b\,c\,\mathrm {atan}\left (\frac {{\left (b\,x^4+a\right )}^{1/4}}{a^{1/4}}\right )}{8\,a^{5/4}}+\frac {b\,c\,\mathrm {atanh}\left (\frac {{\left (b\,x^4+a\right )}^{1/4}}{a^{1/4}}\right )}{8\,a^{5/4}} \] Input:
int((c + d*x^4)/(x^5*(a + b*x^4)^(1/4)),x)
Output:
(d*atan((a + b*x^4)^(1/4)/a^(1/4)))/(2*a^(1/4)) - (d*atanh((a + b*x^4)^(1/ 4)/a^(1/4)))/(2*a^(1/4)) - (c*(a + b*x^4)^(3/4))/(4*a*x^4) - (b*c*atan((a + b*x^4)^(1/4)/a^(1/4)))/(8*a^(5/4)) + (b*c*atanh((a + b*x^4)^(1/4)/a^(1/4 )))/(8*a^(5/4))
\[ \int \frac {c+d x^4}{x^5 \sqrt [4]{a+b x^4}} \, dx=\left (\int \frac {1}{\left (b \,x^{4}+a \right )^{\frac {1}{4}} x^{5}}d x \right ) c +\left (\int \frac {1}{\left (b \,x^{4}+a \right )^{\frac {1}{4}} x}d x \right ) d \] Input:
int((d*x^4+c)/x^5/(b*x^4+a)^(1/4),x)
Output:
int(1/((a + b*x**4)**(1/4)*x**5),x)*c + int(1/((a + b*x**4)**(1/4)*x),x)*d