3.189 \(\int \cot ^3(e+f x) (a+b \tan ^2(e+f x)) \, dx\)

Optimal. Leaf size=34 \[ -\frac {(a-b) \log (\sin (e+f x))}{f}-\frac {a \cot ^2(e+f x)}{2 f} \]

[Out]

-1/2*a*cot(f*x+e)^2/f-(a-b)*ln(sin(f*x+e))/f

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Rubi [A]  time = 0.03, antiderivative size = 34, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {3629, 12, 3475} \[ -\frac {(a-b) \log (\sin (e+f x))}{f}-\frac {a \cot ^2(e+f x)}{2 f} \]

Antiderivative was successfully verified.

[In]

Int[Cot[e + f*x]^3*(a + b*Tan[e + f*x]^2),x]

[Out]

-(a*Cot[e + f*x]^2)/(2*f) - ((a - b)*Log[Sin[e + f*x]])/f

Rule 12

Int[(a_)*(u_), x_Symbol] :> Dist[a, Int[u, x], x] /; FreeQ[a, x] &&  !MatchQ[u, (b_)*(v_) /; FreeQ[b, x]]

Rule 3475

Int[tan[(c_.) + (d_.)*(x_)], x_Symbol] :> -Simp[Log[RemoveContent[Cos[c + d*x], x]]/d, x] /; FreeQ[{c, d}, x]

Rule 3629

Int[((a_.) + (b_.)*tan[(e_.) + (f_.)*(x_)])^(m_)*((A_.) + (C_.)*tan[(e_.) + (f_.)*(x_)]^2), x_Symbol] :> Simp[
((A*b^2 + a^2*C)*(a + b*Tan[e + f*x])^(m + 1))/(b*f*(m + 1)*(a^2 + b^2)), x] + Dist[1/(a^2 + b^2), Int[(a + b*
Tan[e + f*x])^(m + 1)*Simp[a*(A - C) - (A*b - b*C)*Tan[e + f*x], x], x], x] /; FreeQ[{a, b, e, f, A, C}, x] &&
NeQ[A*b^2 + a^2*C, 0] && LtQ[m, -1] && NeQ[a^2 + b^2, 0]

Rubi steps

\begin {align*} \int \cot ^3(e+f x) \left (a+b \tan ^2(e+f x)\right ) \, dx &=-\frac {a \cot ^2(e+f x)}{2 f}-\int (a-b) \cot (e+f x) \, dx\\ &=-\frac {a \cot ^2(e+f x)}{2 f}-(a-b) \int \cot (e+f x) \, dx\\ &=-\frac {a \cot ^2(e+f x)}{2 f}-\frac {(a-b) \log (\sin (e+f x))}{f}\\ \end {align*}

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Mathematica [A]  time = 0.16, size = 56, normalized size = 1.65 \[ \frac {b (\log (\tan (e+f x))+\log (\cos (e+f x)))}{f}-\frac {a \left (\cot ^2(e+f x)+2 \log (\tan (e+f x))+2 \log (\cos (e+f x))\right )}{2 f} \]

Antiderivative was successfully verified.

[In]

Integrate[Cot[e + f*x]^3*(a + b*Tan[e + f*x]^2),x]

[Out]

(b*(Log[Cos[e + f*x]] + Log[Tan[e + f*x]]))/f - (a*(Cot[e + f*x]^2 + 2*Log[Cos[e + f*x]] + 2*Log[Tan[e + f*x]]
))/(2*f)

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fricas [A]  time = 0.42, size = 61, normalized size = 1.79 \[ -\frac {{\left (a - b\right )} \log \left (\frac {\tan \left (f x + e\right )^{2}}{\tan \left (f x + e\right )^{2} + 1}\right ) \tan \left (f x + e\right )^{2} + a \tan \left (f x + e\right )^{2} + a}{2 \, f \tan \left (f x + e\right )^{2}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cot(f*x+e)^3*(a+b*tan(f*x+e)^2),x, algorithm="fricas")

[Out]

-1/2*((a - b)*log(tan(f*x + e)^2/(tan(f*x + e)^2 + 1))*tan(f*x + e)^2 + a*tan(f*x + e)^2 + a)/(f*tan(f*x + e)^
2)

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giac [F(-2)]  time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: NotImplementedError} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cot(f*x+e)^3*(a+b*tan(f*x+e)^2),x, algorithm="giac")

[Out]

Exception raised: NotImplementedError >> Unable to parse Giac output: Unable to check sign: (2*pi/x/2)>(-2*pi/
x/2)Unable to check sign: (2*pi/x/2)>(-2*pi/x/2)Unable to check sign: (2*pi/x/2)>(-2*pi/x/2)2/f*(-(1-cos(f*x+e
xp(1)))/(1+cos(f*x+exp(1)))*a/16+(4*(1-cos(f*x+exp(1)))/(1+cos(f*x+exp(1)))*a-4*(1-cos(f*x+exp(1)))/(1+cos(f*x
+exp(1)))*b-a)*1/16/(1-cos(f*x+exp(1)))*(1+cos(f*x+exp(1)))+(a-b)/2*ln(abs((1-cos(f*x+exp(1)))/(1+cos(f*x+exp(
1)))+1))+(-a+b)/4*ln(abs(1-cos(f*x+exp(1)))/abs(1+cos(f*x+exp(1)))))

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maple [A]  time = 0.66, size = 41, normalized size = 1.21 \[ \frac {b \ln \left (\sin \left (f x +e \right )\right )}{f}-\frac {a \left (\cot ^{2}\left (f x +e \right )\right )}{2 f}-\frac {a \ln \left (\sin \left (f x +e \right )\right )}{f} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cot(f*x+e)^3*(a+b*tan(f*x+e)^2),x)

[Out]

1/f*b*ln(sin(f*x+e))-1/2*a*cot(f*x+e)^2/f-a*ln(sin(f*x+e))/f

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maxima [A]  time = 0.31, size = 31, normalized size = 0.91 \[ -\frac {{\left (a - b\right )} \log \left (\sin \left (f x + e\right )^{2}\right ) + \frac {a}{\sin \left (f x + e\right )^{2}}}{2 \, f} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cot(f*x+e)^3*(a+b*tan(f*x+e)^2),x, algorithm="maxima")

[Out]

-1/2*((a - b)*log(sin(f*x + e)^2) + a/sin(f*x + e)^2)/f

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mupad [B]  time = 11.62, size = 54, normalized size = 1.59 \[ \frac {\ln \left ({\mathrm {tan}\left (e+f\,x\right )}^2+1\right )\,\left (\frac {a}{2}-\frac {b}{2}\right )}{f}-\frac {\ln \left (\mathrm {tan}\left (e+f\,x\right )\right )\,\left (a-b\right )}{f}-\frac {a\,{\mathrm {cot}\left (e+f\,x\right )}^2}{2\,f} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cot(e + f*x)^3*(a + b*tan(e + f*x)^2),x)

[Out]

(log(tan(e + f*x)^2 + 1)*(a/2 - b/2))/f - (log(tan(e + f*x))*(a - b))/f - (a*cot(e + f*x)^2)/(2*f)

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sympy [A]  time = 1.29, size = 97, normalized size = 2.85 \[ \begin {cases} \tilde {\infty } a x & \text {for}\: e = 0 \wedge f = 0 \\x \left (a + b \tan ^{2}{\relax (e )}\right ) \cot ^{3}{\relax (e )} & \text {for}\: f = 0 \\\tilde {\infty } a x & \text {for}\: e = - f x \\\frac {a \log {\left (\tan ^{2}{\left (e + f x \right )} + 1 \right )}}{2 f} - \frac {a \log {\left (\tan {\left (e + f x \right )} \right )}}{f} - \frac {a}{2 f \tan ^{2}{\left (e + f x \right )}} - \frac {b \log {\left (\tan ^{2}{\left (e + f x \right )} + 1 \right )}}{2 f} + \frac {b \log {\left (\tan {\left (e + f x \right )} \right )}}{f} & \text {otherwise} \end {cases} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cot(f*x+e)**3*(a+b*tan(f*x+e)**2),x)

[Out]

Piecewise((zoo*a*x, Eq(e, 0) & Eq(f, 0)), (x*(a + b*tan(e)**2)*cot(e)**3, Eq(f, 0)), (zoo*a*x, Eq(e, -f*x)), (
a*log(tan(e + f*x)**2 + 1)/(2*f) - a*log(tan(e + f*x))/f - a/(2*f*tan(e + f*x)**2) - b*log(tan(e + f*x)**2 + 1
)/(2*f) + b*log(tan(e + f*x))/f, True))

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