3.7.73 \(\int \frac {(a+i a \tan (e+f x)) (A+B \tan (e+f x))}{(c-i c \tan (e+f x))^3} \, dx\) [673]

Optimal. Leaf size=55 \[ -\frac {a (A-i B)}{3 c^3 f (i+\tan (e+f x))^3}-\frac {a B}{2 c^3 f (i+\tan (e+f x))^2} \]

[Out]

-1/3*a*(A-I*B)/c^3/f/(I+tan(f*x+e))^3-1/2*a*B/c^3/f/(I+tan(f*x+e))^2

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Rubi [A]
time = 0.06, antiderivative size = 55, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 39, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.051, Rules used = {3669, 45} \begin {gather*} -\frac {a (A-i B)}{3 c^3 f (\tan (e+f x)+i)^3}-\frac {a B}{2 c^3 f (\tan (e+f x)+i)^2} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[((a + I*a*Tan[e + f*x])*(A + B*Tan[e + f*x]))/(c - I*c*Tan[e + f*x])^3,x]

[Out]

-1/3*(a*(A - I*B))/(c^3*f*(I + Tan[e + f*x])^3) - (a*B)/(2*c^3*f*(I + Tan[e + f*x])^2)

Rule 45

Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_.), x_Symbol] :> Int[ExpandIntegrand[(a + b*x)^m*(c + d
*x)^n, x], x] /; FreeQ[{a, b, c, d, n}, x] && NeQ[b*c - a*d, 0] && IGtQ[m, 0] && ( !IntegerQ[n] || (EqQ[c, 0]
&& LeQ[7*m + 4*n + 4, 0]) || LtQ[9*m + 5*(n + 1), 0] || GtQ[m + n + 2, 0])

Rule 3669

Int[((a_) + (b_.)*tan[(e_.) + (f_.)*(x_)])^(m_.)*((A_.) + (B_.)*tan[(e_.) + (f_.)*(x_)])*((c_) + (d_.)*tan[(e_
.) + (f_.)*(x_)])^(n_.), x_Symbol] :> Dist[a*(c/f), Subst[Int[(a + b*x)^(m - 1)*(c + d*x)^(n - 1)*(A + B*x), x
], x, Tan[e + f*x]], x] /; FreeQ[{a, b, c, d, e, f, A, B, m, n}, x] && EqQ[b*c + a*d, 0] && EqQ[a^2 + b^2, 0]

Rubi steps

\begin {align*} \int \frac {(a+i a \tan (e+f x)) (A+B \tan (e+f x))}{(c-i c \tan (e+f x))^3} \, dx &=\frac {(a c) \text {Subst}\left (\int \frac {A+B x}{(c-i c x)^4} \, dx,x,\tan (e+f x)\right )}{f}\\ &=\frac {(a c) \text {Subst}\left (\int \left (\frac {A-i B}{c^4 (i+x)^4}+\frac {B}{c^4 (i+x)^3}\right ) \, dx,x,\tan (e+f x)\right )}{f}\\ &=-\frac {a (A-i B)}{3 c^3 f (i+\tan (e+f x))^3}-\frac {a B}{2 c^3 f (i+\tan (e+f x))^2}\\ \end {align*}

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Mathematica [A]
time = 0.66, size = 72, normalized size = 1.31 \begin {gather*} \frac {a (-3 i A+2 (-2 i A+B) \cos (2 (e+f x))-2 (A+2 i B) \sin (2 (e+f x))) (\cos (4 (e+f x))+i \sin (4 (e+f x)))}{24 c^3 f} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[((a + I*a*Tan[e + f*x])*(A + B*Tan[e + f*x]))/(c - I*c*Tan[e + f*x])^3,x]

[Out]

(a*((-3*I)*A + 2*((-2*I)*A + B)*Cos[2*(e + f*x)] - 2*(A + (2*I)*B)*Sin[2*(e + f*x)])*(Cos[4*(e + f*x)] + I*Sin
[4*(e + f*x)]))/(24*c^3*f)

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Maple [A]
time = 0.21, size = 43, normalized size = 0.78

method	result	size
derivativedivides	\(\frac {a \left (-\frac {B}{2 \left (i+\tan \left (f x +e \right )\right )^{2}}-\frac {-i B +A}{3 \left (i+\tan \left (f x +e \right )\right )^{3}}\right )}{f \,c^{3}}\)	\(43\)
default	\(\frac {a \left (-\frac {B}{2 \left (i+\tan \left (f x +e \right )\right )^{2}}-\frac {-i B +A}{3 \left (i+\tan \left (f x +e \right )\right )^{3}}\right )}{f \,c^{3}}\)	\(43\)
risch	\(-\frac {a \,{\mathrm e}^{6 i \left (f x +e \right )} B}{24 c^{3} f}-\frac {i a \,{\mathrm e}^{6 i \left (f x +e \right )} A}{24 c^{3} f}-\frac {i a A \,{\mathrm e}^{4 i \left (f x +e \right )}}{8 c^{3} f}+\frac {a \,{\mathrm e}^{2 i \left (f x +e \right )} B}{8 c^{3} f}-\frac {i a \,{\mathrm e}^{2 i \left (f x +e \right )} A}{8 c^{3} f}\)	\(100\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a+I*a*tan(f*x+e))*(A+B*tan(f*x+e))/(c-I*c*tan(f*x+e))^3,x,method=_RETURNVERBOSE)

[Out]

1/f*a/c^3*(-1/2*B/(I+tan(f*x+e))^2-1/3*(A-I*B)/(I+tan(f*x+e))^3)

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Maxima [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: RuntimeError} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+I*a*tan(f*x+e))*(A+B*tan(f*x+e))/(c-I*c*tan(f*x+e))^3,x, algorithm="maxima")

[Out]

Exception raised: RuntimeError >> ECL says: Error executing code in Maxima: expt: undefined: 0 to a negative e
xponent.

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Fricas [A]
time = 5.66, size = 62, normalized size = 1.13 \begin {gather*} \frac {{\left (-i \, A - B\right )} a e^{\left (6 i \, f x + 6 i \, e\right )} - 3 i \, A a e^{\left (4 i \, f x + 4 i \, e\right )} - 3 \, {\left (i \, A - B\right )} a e^{\left (2 i \, f x + 2 i \, e\right )}}{24 \, c^{3} f} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+I*a*tan(f*x+e))*(A+B*tan(f*x+e))/(c-I*c*tan(f*x+e))^3,x, algorithm="fricas")

[Out]

1/24*((-I*A - B)*a*e^(6*I*f*x + 6*I*e) - 3*I*A*a*e^(4*I*f*x + 4*I*e) - 3*(I*A - B)*a*e^(2*I*f*x + 2*I*e))/(c^3
*f)

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Sympy [B] Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 201 vs. \(2 (44) = 88\).
time = 0.26, size = 201, normalized size = 3.65 \begin {gather*} \begin {cases} \frac {- 192 i A a c^{6} f^{2} e^{4 i e} e^{4 i f x} + \left (- 192 i A a c^{6} f^{2} e^{2 i e} + 192 B a c^{6} f^{2} e^{2 i e}\right ) e^{2 i f x} + \left (- 64 i A a c^{6} f^{2} e^{6 i e} - 64 B a c^{6} f^{2} e^{6 i e}\right ) e^{6 i f x}}{1536 c^{9} f^{3}} & \text {for}\: c^{9} f^{3} \neq 0 \\\frac {x \left (A a e^{6 i e} + 2 A a e^{4 i e} + A a e^{2 i e} - i B a e^{6 i e} + i B a e^{2 i e}\right )}{4 c^{3}} & \text {otherwise} \end {cases} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+I*a*tan(f*x+e))*(A+B*tan(f*x+e))/(c-I*c*tan(f*x+e))**3,x)

[Out]

Piecewise(((-192*I*A*a*c**6*f**2*exp(4*I*e)*exp(4*I*f*x) + (-192*I*A*a*c**6*f**2*exp(2*I*e) + 192*B*a*c**6*f**
2*exp(2*I*e))*exp(2*I*f*x) + (-64*I*A*a*c**6*f**2*exp(6*I*e) - 64*B*a*c**6*f**2*exp(6*I*e))*exp(6*I*f*x))/(153
6*c**9*f**3), Ne(c**9*f**3, 0)), (x*(A*a*exp(6*I*e) + 2*A*a*exp(4*I*e) + A*a*exp(2*I*e) - I*B*a*exp(6*I*e) + I
*B*a*exp(2*I*e))/(4*c**3), True))

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Giac [B] Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 149 vs. \(2 (47) = 94\).
time = 0.73, size = 149, normalized size = 2.71 \begin {gather*} -\frac {2 \, {\left (3 \, A a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{5} + 6 i \, A a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{4} - 3 \, B a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{4} - 10 \, A a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{3} - 2 i \, B a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{3} - 6 i \, A a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{2} + 3 \, B a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{2} + 3 \, A a \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )\right )}}{3 \, c^{3} f {\left (\tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right ) + i\right )}^{6}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+I*a*tan(f*x+e))*(A+B*tan(f*x+e))/(c-I*c*tan(f*x+e))^3,x, algorithm="giac")

[Out]

-2/3*(3*A*a*tan(1/2*f*x + 1/2*e)^5 + 6*I*A*a*tan(1/2*f*x + 1/2*e)^4 - 3*B*a*tan(1/2*f*x + 1/2*e)^4 - 10*A*a*ta
n(1/2*f*x + 1/2*e)^3 - 2*I*B*a*tan(1/2*f*x + 1/2*e)^3 - 6*I*A*a*tan(1/2*f*x + 1/2*e)^2 + 3*B*a*tan(1/2*f*x + 1
/2*e)^2 + 3*A*a*tan(1/2*f*x + 1/2*e))/(c^3*f*(tan(1/2*f*x + 1/2*e) + I)^6)

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Mupad [B]
time = 8.63, size = 63, normalized size = 1.15 \begin {gather*} \frac {\frac {a\,\left (2\,A+B\,1{}\mathrm {i}\right )}{6}+\frac {B\,a\,\mathrm {tan}\left (e+f\,x\right )}{2}}{c^3\,f\,\left (-{\mathrm {tan}\left (e+f\,x\right )}^3-{\mathrm {tan}\left (e+f\,x\right )}^2\,3{}\mathrm {i}+3\,\mathrm {tan}\left (e+f\,x\right )+1{}\mathrm {i}\right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(((A + B*tan(e + f*x))*(a + a*tan(e + f*x)*1i))/(c - c*tan(e + f*x)*1i)^3,x)

[Out]

((a*(2*A + B*1i))/6 + (B*a*tan(e + f*x))/2)/(c^3*f*(3*tan(e + f*x) - tan(e + f*x)^2*3i - tan(e + f*x)^3 + 1i))

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