Integrand size = 25, antiderivative size = 142 \[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\frac {4 i (a-i a x)^{7/4}}{5 a (a+i a x)^{5/4}}-\frac {42 i}{5 \sqrt [4]{a-i a x} \sqrt [4]{a+i a x}}+\frac {14 i (a-i a x)^{3/4}}{5 a \sqrt [4]{a+i a x}}-\frac {42 \sqrt [4]{1+x^2} E\left (\left .\frac {\arctan (x)}{2}\right |2\right )}{5 \sqrt [4]{a-i a x} \sqrt [4]{a+i a x}} \] Output:
4/5*I*(a-I*a*x)^(7/4)/a/(a+I*a*x)^(5/4)-42/5*I/(a-I*a*x)^(1/4)/(a+I*a*x)^( 1/4)+14/5*I*(a-I*a*x)^(3/4)/a/(a+I*a*x)^(1/4)-42/5*(x^2+1)^(1/4)*EllipticE (sin(1/2*arctan(x)),2^(1/2))/(a-I*a*x)^(1/4)/(a+I*a*x)^(1/4)
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 0.02 (sec) , antiderivative size = 70, normalized size of antiderivative = 0.49 \[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\frac {i \sqrt [4]{1+i x} (a-i a x)^{11/4} \operatorname {Hypergeometric2F1}\left (\frac {9}{4},\frac {11}{4},\frac {15}{4},\frac {1}{2}-\frac {i x}{2}\right )}{11 \sqrt [4]{2} a^3 \sqrt [4]{a+i a x}} \] Input:
Integrate[(a - I*a*x)^(7/4)/(a + I*a*x)^(9/4),x]
Output:
((I/11)*(1 + I*x)^(1/4)*(a - I*a*x)^(11/4)*Hypergeometric2F1[9/4, 11/4, 15 /4, 1/2 - (I/2)*x])/(2^(1/4)*a^3*(a + I*a*x)^(1/4))
Time = 0.18 (sec) , antiderivative size = 128, normalized size of antiderivative = 0.90, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.240, Rules used = {57, 57, 46, 227, 225, 212}
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.
\(\displaystyle \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx\) |
\(\Big \downarrow \) 57 |
\(\displaystyle \frac {4 i (a-i a x)^{7/4}}{5 a (a+i a x)^{5/4}}-\frac {7}{5} \int \frac {(a-i a x)^{3/4}}{(i x a+a)^{5/4}}dx\) |
\(\Big \downarrow \) 57 |
\(\displaystyle \frac {4 i (a-i a x)^{7/4}}{5 a (a+i a x)^{5/4}}-\frac {7}{5} \left (\frac {4 i (a-i a x)^{3/4}}{a \sqrt [4]{a+i a x}}-3 \int \frac {1}{\sqrt [4]{a-i a x} \sqrt [4]{i x a+a}}dx\right )\) |
\(\Big \downarrow \) 46 |
\(\displaystyle \frac {4 i (a-i a x)^{7/4}}{5 a (a+i a x)^{5/4}}-\frac {7}{5} \left (\frac {4 i (a-i a x)^{3/4}}{a \sqrt [4]{a+i a x}}-\frac {3 \sqrt [4]{a^2 x^2+a^2} \int \frac {1}{\sqrt [4]{x^2 a^2+a^2}}dx}{\sqrt [4]{a-i a x} \sqrt [4]{a+i a x}}\right )\) |
\(\Big \downarrow \) 227 |
\(\displaystyle \frac {4 i (a-i a x)^{7/4}}{5 a (a+i a x)^{5/4}}-\frac {7}{5} \left (\frac {4 i (a-i a x)^{3/4}}{a \sqrt [4]{a+i a x}}-\frac {3 \sqrt [4]{x^2+1} \int \frac {1}{\sqrt [4]{x^2+1}}dx}{\sqrt [4]{a-i a x} \sqrt [4]{a+i a x}}\right )\) |
\(\Big \downarrow \) 225 |
\(\displaystyle \frac {4 i (a-i a x)^{7/4}}{5 a (a+i a x)^{5/4}}-\frac {7}{5} \left (\frac {4 i (a-i a x)^{3/4}}{a \sqrt [4]{a+i a x}}-\frac {3 \sqrt [4]{x^2+1} \left (\frac {2 x}{\sqrt [4]{x^2+1}}-\int \frac {1}{\left (x^2+1\right )^{5/4}}dx\right )}{\sqrt [4]{a-i a x} \sqrt [4]{a+i a x}}\right )\) |
\(\Big \downarrow \) 212 |
\(\displaystyle \frac {4 i (a-i a x)^{7/4}}{5 a (a+i a x)^{5/4}}-\frac {7}{5} \left (\frac {4 i (a-i a x)^{3/4}}{a \sqrt [4]{a+i a x}}-\frac {3 \sqrt [4]{x^2+1} \left (\frac {2 x}{\sqrt [4]{x^2+1}}-2 E\left (\left .\frac {\arctan (x)}{2}\right |2\right )\right )}{\sqrt [4]{a-i a x} \sqrt [4]{a+i a x}}\right )\) |
Input:
Int[(a - I*a*x)^(7/4)/(a + I*a*x)^(9/4),x]
Output:
(((4*I)/5)*(a - I*a*x)^(7/4))/(a*(a + I*a*x)^(5/4)) - (7*(((4*I)*(a - I*a* x)^(3/4))/(a*(a + I*a*x)^(1/4)) - (3*(1 + x^2)^(1/4)*((2*x)/(1 + x^2)^(1/4 ) - 2*EllipticE[ArcTan[x]/2, 2]))/((a - I*a*x)^(1/4)*(a + I*a*x)^(1/4))))/ 5
Int[((a_) + (b_.)*(x_))^(m_)*((c_) + (d_.)*(x_))^(m_), x_Symbol] :> Simp[(a + b*x)^FracPart[m]*((c + d*x)^FracPart[m]/(a*c + b*d*x^2)^FracPart[m]) I nt[(a*c + b*d*x^2)^m, x], x] /; FreeQ[{a, b, c, d, m}, x] && EqQ[b*c + a*d, 0] && !IntegerQ[2*m]
Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[ (a + b*x)^(m + 1)*((c + d*x)^n/(b*(m + 1))), x] - Simp[d*(n/(b*(m + 1))) Int[(a + b*x)^(m + 1)*(c + d*x)^(n - 1), x], x] /; FreeQ[{a, b, c, d}, x] & & GtQ[n, 0] && LtQ[m, -1] && !(IntegerQ[n] && !IntegerQ[m]) && !(ILeQ[m + n + 2, 0] && (FractionQ[m] || GeQ[2*n + m + 1, 0])) && IntLinearQ[a, b, c , d, m, n, x]
Int[((a_) + (b_.)*(x_)^2)^(-5/4), x_Symbol] :> Simp[(2/(a^(5/4)*Rt[b/a, 2]) )*EllipticE[(1/2)*ArcTan[Rt[b/a, 2]*x], 2], x] /; FreeQ[{a, b}, x] && GtQ[a , 0] && PosQ[b/a]
Int[((a_) + (b_.)*(x_)^2)^(-1/4), x_Symbol] :> Simp[2*(x/(a + b*x^2)^(1/4)) , x] - Simp[a Int[1/(a + b*x^2)^(5/4), x], x] /; FreeQ[{a, b}, x] && GtQ[ a, 0] && PosQ[b/a]
Int[((a_) + (b_.)*(x_)^2)^(-1/4), x_Symbol] :> Simp[(1 + b*(x^2/a))^(1/4)/( a + b*x^2)^(1/4) Int[1/(1 + b*(x^2/a))^(1/4), x], x] /; FreeQ[{a, b}, x] && PosQ[a]
Result contains higher order function than in optimal. Order 5 vs. order 4.
Time = 0.19 (sec) , antiderivative size = 101, normalized size of antiderivative = 0.71
method | result | size |
risch | \(-\frac {8 \left (4 x^{2}+i x +3\right )}{5 \left (x -i\right ) \left (-a \left (i x -1\right )\right )^{\frac {1}{4}} \left (a \left (i x +1\right )\right )^{\frac {1}{4}}}+\frac {21 x \operatorname {hypergeom}\left (\left [\frac {1}{4}, \frac {1}{2}\right ], \left [\frac {3}{2}\right ], -x^{2}\right ) \left (-a^{2} \left (i x -1\right ) \left (i x +1\right )\right )^{\frac {1}{4}}}{5 \left (a^{2}\right )^{\frac {1}{4}} \left (-a \left (i x -1\right )\right )^{\frac {1}{4}} \left (a \left (i x +1\right )\right )^{\frac {1}{4}}}\) | \(101\) |
Input:
int((a-I*a*x)^(7/4)/(a+I*a*x)^(9/4),x,method=_RETURNVERBOSE)
Output:
-8/5*(4*x^2+3+I*x)/(x-I)/(-a*(I*x-1))^(1/4)/(a*(I*x+1))^(1/4)+21/5/(a^2)^( 1/4)*x*hypergeom([1/4,1/2],[3/2],-x^2)*(-a^2*(I*x-1)*(I*x+1))^(1/4)/(-a*(I *x-1))^(1/4)/(a*(I*x+1))^(1/4)
\[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\int { \frac {{\left (-i \, a x + a\right )}^{\frac {7}{4}}}{{\left (i \, a x + a\right )}^{\frac {9}{4}}} \,d x } \] Input:
integrate((a-I*a*x)^(7/4)/(a+I*a*x)^(9/4),x, algorithm="fricas")
Output:
1/5*(2*(I*a*x + a)^(3/4)*(-I*a*x + a)^(3/4)*(5*x^2 - 30*I*x - 21) + 5*(a^2 *x^3 - 2*I*a^2*x^2 - a^2*x)*integral(42/5*(I*a*x + a)^(3/4)*(-I*a*x + a)^( 3/4)/(a^2*x^4 + a^2*x^2), x))/(a^2*x^3 - 2*I*a^2*x^2 - a^2*x)
\[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\int \frac {\left (- i a \left (x + i\right )\right )^{\frac {7}{4}}}{\left (i a \left (x - i\right )\right )^{\frac {9}{4}}}\, dx \] Input:
integrate((a-I*a*x)**(7/4)/(a+I*a*x)**(9/4),x)
Output:
Integral((-I*a*(x + I))**(7/4)/(I*a*(x - I))**(9/4), x)
\[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\int { \frac {{\left (-i \, a x + a\right )}^{\frac {7}{4}}}{{\left (i \, a x + a\right )}^{\frac {9}{4}}} \,d x } \] Input:
integrate((a-I*a*x)^(7/4)/(a+I*a*x)^(9/4),x, algorithm="maxima")
Output:
integrate((-I*a*x + a)^(7/4)/(I*a*x + a)^(9/4), x)
Exception generated. \[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\text {Exception raised: RuntimeError} \] Input:
integrate((a-I*a*x)^(7/4)/(a+I*a*x)^(9/4),x, algorithm="giac")
Output:
Exception raised: RuntimeError >> an error occurred running a Giac command :INPUT:sage2OUTPUT:Warning, choosing root of [1,0,0,0,%%%{-1,[1,0]%%%}+%%% {i,[0,1]%%%}] at parameters values [44,93]Warning, need to choose a branch for the roo
Timed out. \[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\int \frac {{\left (a-a\,x\,1{}\mathrm {i}\right )}^{7/4}}{{\left (a+a\,x\,1{}\mathrm {i}\right )}^{9/4}} \,d x \] Input:
int((a - a*x*1i)^(7/4)/(a + a*x*1i)^(9/4),x)
Output:
int((a - a*x*1i)^(7/4)/(a + a*x*1i)^(9/4), x)
\[ \int \frac {(a-i a x)^{7/4}}{(a+i a x)^{9/4}} \, dx=\frac {\sqrt {a}\, \left (\int \frac {\left (-i x +1\right )^{\frac {3}{4}}}{2 \left (i x +1\right )^{\frac {1}{4}} i x -\left (i x +1\right )^{\frac {1}{4}} x^{2}+\left (i x +1\right )^{\frac {1}{4}}}d x -\left (\int \frac {\left (-i x +1\right )^{\frac {3}{4}} x}{2 \left (i x +1\right )^{\frac {1}{4}} i x -\left (i x +1\right )^{\frac {1}{4}} x^{2}+\left (i x +1\right )^{\frac {1}{4}}}d x \right ) i \right )}{a} \] Input:
int((a-I*a*x)^(7/4)/(a+I*a*x)^(9/4),x)
Output:
(sqrt(a)*(int(( - i*x + 1)**(3/4)/(2*(i*x + 1)**(1/4)*i*x - (i*x + 1)**(1/ 4)*x**2 + (i*x + 1)**(1/4)),x) - int((( - i*x + 1)**(3/4)*x)/(2*(i*x + 1)* *(1/4)*i*x - (i*x + 1)**(1/4)*x**2 + (i*x + 1)**(1/4)),x)*i))/a