3.555 \(\int \frac{\sec ^6(c+d x)}{(a+b \tan (c+d x))^2} \, dx\)

Optimal. Leaf size=116 \[ \frac{\left (3 a^2+2 b^2\right ) \tan (c+d x)}{b^4 d}-\frac{\left (a^2+b^2\right )^2}{b^5 d (a+b \tan (c+d x))}-\frac{4 a \left (a^2+b^2\right ) \log (a+b \tan (c+d x))}{b^5 d}-\frac{a \tan ^2(c+d x)}{b^3 d}+\frac{\tan ^3(c+d x)}{3 b^2 d} \]

[Out]

(-4*a*(a^2 + b^2)*Log[a + b*Tan[c + d*x]])/(b^5*d) + ((3*a^2 + 2*b^2)*Tan[c + d*x])/(b^4*d) - (a*Tan[c + d*x]^
2)/(b^3*d) + Tan[c + d*x]^3/(3*b^2*d) - (a^2 + b^2)^2/(b^5*d*(a + b*Tan[c + d*x]))

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Rubi [A]  time = 0.0968805, antiderivative size = 116, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.095, Rules used = {3506, 697} \[ \frac{\left (3 a^2+2 b^2\right ) \tan (c+d x)}{b^4 d}-\frac{\left (a^2+b^2\right )^2}{b^5 d (a+b \tan (c+d x))}-\frac{4 a \left (a^2+b^2\right ) \log (a+b \tan (c+d x))}{b^5 d}-\frac{a \tan ^2(c+d x)}{b^3 d}+\frac{\tan ^3(c+d x)}{3 b^2 d} \]

Antiderivative was successfully verified.

[In]

Int[Sec[c + d*x]^6/(a + b*Tan[c + d*x])^2,x]

[Out]

(-4*a*(a^2 + b^2)*Log[a + b*Tan[c + d*x]])/(b^5*d) + ((3*a^2 + 2*b^2)*Tan[c + d*x])/(b^4*d) - (a*Tan[c + d*x]^
2)/(b^3*d) + Tan[c + d*x]^3/(3*b^2*d) - (a^2 + b^2)^2/(b^5*d*(a + b*Tan[c + d*x]))

Rule 3506

Int[sec[(e_.) + (f_.)*(x_)]^(m_)*((a_) + (b_.)*tan[(e_.) + (f_.)*(x_)])^(n_), x_Symbol] :> Dist[1/(b*f), Subst
[Int[(a + x)^n*(1 + x^2/b^2)^(m/2 - 1), x], x, b*Tan[e + f*x]], x] /; FreeQ[{a, b, e, f, n}, x] && NeQ[a^2 + b
^2, 0] && IntegerQ[m/2]

Rule 697

Int[((d_) + (e_.)*(x_))^(m_)*((a_) + (c_.)*(x_)^2)^(p_.), x_Symbol] :> Int[ExpandIntegrand[(d + e*x)^m*(a + c*
x^2)^p, x], x] /; FreeQ[{a, c, d, e, m}, x] && NeQ[c*d^2 + a*e^2, 0] && IGtQ[p, 0]

Rubi steps

\begin{align*} \int \frac{\sec ^6(c+d x)}{(a+b \tan (c+d x))^2} \, dx &=\frac{\operatorname{Subst}\left (\int \frac{\left (1+\frac{x^2}{b^2}\right )^2}{(a+x)^2} \, dx,x,b \tan (c+d x)\right )}{b d}\\ &=\frac{\operatorname{Subst}\left (\int \left (\frac{3 a^2+2 b^2}{b^4}-\frac{2 a x}{b^4}+\frac{x^2}{b^4}+\frac{\left (a^2+b^2\right )^2}{b^4 (a+x)^2}-\frac{4 a \left (a^2+b^2\right )}{b^4 (a+x)}\right ) \, dx,x,b \tan (c+d x)\right )}{b d}\\ &=-\frac{4 a \left (a^2+b^2\right ) \log (a+b \tan (c+d x))}{b^5 d}+\frac{\left (3 a^2+2 b^2\right ) \tan (c+d x)}{b^4 d}-\frac{a \tan ^2(c+d x)}{b^3 d}+\frac{\tan ^3(c+d x)}{3 b^2 d}-\frac{\left (a^2+b^2\right )^2}{b^5 d (a+b \tan (c+d x))}\\ \end{align*}

Mathematica [A]  time = 2.77048, size = 122, normalized size = 1.05 \[ \frac{4 b \left (2 a^2+b^2\right ) \tan (c+d x)+\frac{b^4 \sec ^4(c+d x)-4 \left (a^2+b^2\right ) \left (3 a^2 \log (a+b \tan (c+d x))+a^2+3 a b \tan (c+d x) \log (a+b \tan (c+d x))+b^2\right )}{a+b \tan (c+d x)}-2 a b^2 \tan ^2(c+d x)}{3 b^5 d} \]

Antiderivative was successfully verified.

[In]

Integrate[Sec[c + d*x]^6/(a + b*Tan[c + d*x])^2,x]

[Out]

(4*b*(2*a^2 + b^2)*Tan[c + d*x] - 2*a*b^2*Tan[c + d*x]^2 + (b^4*Sec[c + d*x]^4 - 4*(a^2 + b^2)*(a^2 + b^2 + 3*
a^2*Log[a + b*Tan[c + d*x]] + 3*a*b*Log[a + b*Tan[c + d*x]]*Tan[c + d*x]))/(a + b*Tan[c + d*x]))/(3*b^5*d)

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Maple [A]  time = 0.098, size = 174, normalized size = 1.5 \begin{align*}{\frac{ \left ( \tan \left ( dx+c \right ) \right ) ^{3}}{3\,{b}^{2}d}}-{\frac{a \left ( \tan \left ( dx+c \right ) \right ) ^{2}}{{b}^{3}d}}+3\,{\frac{{a}^{2}\tan \left ( dx+c \right ) }{d{b}^{4}}}+2\,{\frac{\tan \left ( dx+c \right ) }{{b}^{2}d}}-{\frac{{a}^{4}}{d{b}^{5} \left ( a+b\tan \left ( dx+c \right ) \right ) }}-2\,{\frac{{a}^{2}}{{b}^{3}d \left ( a+b\tan \left ( dx+c \right ) \right ) }}-{\frac{1}{bd \left ( a+b\tan \left ( dx+c \right ) \right ) }}-4\,{\frac{{a}^{3}\ln \left ( a+b\tan \left ( dx+c \right ) \right ) }{d{b}^{5}}}-4\,{\frac{a\ln \left ( a+b\tan \left ( dx+c \right ) \right ) }{{b}^{3}d}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(sec(d*x+c)^6/(a+b*tan(d*x+c))^2,x)

[Out]

1/3*tan(d*x+c)^3/b^2/d-a*tan(d*x+c)^2/b^3/d+3/d/b^4*a^2*tan(d*x+c)+2*tan(d*x+c)/b^2/d-1/d/b^5/(a+b*tan(d*x+c))
*a^4-2/d/b^3/(a+b*tan(d*x+c))*a^2-1/b/d/(a+b*tan(d*x+c))-4/d*a^3/b^5*ln(a+b*tan(d*x+c))-4*a*ln(a+b*tan(d*x+c))
/b^3/d

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Maxima [A]  time = 1.1341, size = 155, normalized size = 1.34 \begin{align*} -\frac{\frac{3 \,{\left (a^{4} + 2 \, a^{2} b^{2} + b^{4}\right )}}{b^{6} \tan \left (d x + c\right ) + a b^{5}} - \frac{b^{2} \tan \left (d x + c\right )^{3} - 3 \, a b \tan \left (d x + c\right )^{2} + 3 \,{\left (3 \, a^{2} + 2 \, b^{2}\right )} \tan \left (d x + c\right )}{b^{4}} + \frac{12 \,{\left (a^{3} + a b^{2}\right )} \log \left (b \tan \left (d x + c\right ) + a\right )}{b^{5}}}{3 \, d} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(d*x+c)^6/(a+b*tan(d*x+c))^2,x, algorithm="maxima")

[Out]

-1/3*(3*(a^4 + 2*a^2*b^2 + b^4)/(b^6*tan(d*x + c) + a*b^5) - (b^2*tan(d*x + c)^3 - 3*a*b*tan(d*x + c)^2 + 3*(3
*a^2 + 2*b^2)*tan(d*x + c))/b^4 + 12*(a^3 + a*b^2)*log(b*tan(d*x + c) + a)/b^5)/d

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Fricas [B]  time = 2.29584, size = 656, normalized size = 5.66 \begin{align*} -\frac{4 \,{\left (3 \, a^{2} b^{2} + 2 \, b^{4}\right )} \cos \left (d x + c\right )^{4} - b^{4} - 2 \,{\left (3 \, a^{2} b^{2} + 2 \, b^{4}\right )} \cos \left (d x + c\right )^{2} + 6 \,{\left ({\left (a^{4} + a^{2} b^{2}\right )} \cos \left (d x + c\right )^{4} +{\left (a^{3} b + a b^{3}\right )} \cos \left (d x + c\right )^{3} \sin \left (d x + c\right )\right )} \log \left (2 \, a b \cos \left (d x + c\right ) \sin \left (d x + c\right ) +{\left (a^{2} - b^{2}\right )} \cos \left (d x + c\right )^{2} + b^{2}\right ) - 6 \,{\left ({\left (a^{4} + a^{2} b^{2}\right )} \cos \left (d x + c\right )^{4} +{\left (a^{3} b + a b^{3}\right )} \cos \left (d x + c\right )^{3} \sin \left (d x + c\right )\right )} \log \left (\cos \left (d x + c\right )^{2}\right ) + 2 \,{\left (a b^{3} \cos \left (d x + c\right ) - 2 \,{\left (3 \, a^{3} b + 2 \, a b^{3}\right )} \cos \left (d x + c\right )^{3}\right )} \sin \left (d x + c\right )}{3 \,{\left (a b^{5} d \cos \left (d x + c\right )^{4} + b^{6} d \cos \left (d x + c\right )^{3} \sin \left (d x + c\right )\right )}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(d*x+c)^6/(a+b*tan(d*x+c))^2,x, algorithm="fricas")

[Out]

-1/3*(4*(3*a^2*b^2 + 2*b^4)*cos(d*x + c)^4 - b^4 - 2*(3*a^2*b^2 + 2*b^4)*cos(d*x + c)^2 + 6*((a^4 + a^2*b^2)*c
os(d*x + c)^4 + (a^3*b + a*b^3)*cos(d*x + c)^3*sin(d*x + c))*log(2*a*b*cos(d*x + c)*sin(d*x + c) + (a^2 - b^2)
*cos(d*x + c)^2 + b^2) - 6*((a^4 + a^2*b^2)*cos(d*x + c)^4 + (a^3*b + a*b^3)*cos(d*x + c)^3*sin(d*x + c))*log(
cos(d*x + c)^2) + 2*(a*b^3*cos(d*x + c) - 2*(3*a^3*b + 2*a*b^3)*cos(d*x + c)^3)*sin(d*x + c))/(a*b^5*d*cos(d*x
+ c)^4 + b^6*d*cos(d*x + c)^3*sin(d*x + c))

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\sec ^{6}{\left (c + d x \right )}}{\left (a + b \tan{\left (c + d x \right )}\right )^{2}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(d*x+c)**6/(a+b*tan(d*x+c))**2,x)

[Out]

Integral(sec(c + d*x)**6/(a + b*tan(c + d*x))**2, x)

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Giac [A]  time = 1.4407, size = 201, normalized size = 1.73 \begin{align*} -\frac{\frac{12 \,{\left (a^{3} + a b^{2}\right )} \log \left ({\left | b \tan \left (d x + c\right ) + a \right |}\right )}{b^{5}} - \frac{b^{4} \tan \left (d x + c\right )^{3} - 3 \, a b^{3} \tan \left (d x + c\right )^{2} + 9 \, a^{2} b^{2} \tan \left (d x + c\right ) + 6 \, b^{4} \tan \left (d x + c\right )}{b^{6}} - \frac{3 \,{\left (4 \, a^{3} b \tan \left (d x + c\right ) + 4 \, a b^{3} \tan \left (d x + c\right ) + 3 \, a^{4} + 2 \, a^{2} b^{2} - b^{4}\right )}}{{\left (b \tan \left (d x + c\right ) + a\right )} b^{5}}}{3 \, d} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(d*x+c)^6/(a+b*tan(d*x+c))^2,x, algorithm="giac")

[Out]

-1/3*(12*(a^3 + a*b^2)*log(abs(b*tan(d*x + c) + a))/b^5 - (b^4*tan(d*x + c)^3 - 3*a*b^3*tan(d*x + c)^2 + 9*a^2
*b^2*tan(d*x + c) + 6*b^4*tan(d*x + c))/b^6 - 3*(4*a^3*b*tan(d*x + c) + 4*a*b^3*tan(d*x + c) + 3*a^4 + 2*a^2*b
^2 - b^4)/((b*tan(d*x + c) + a)*b^5))/d