3.2.5 \(\int \frac {a+b \tanh ^{-1}(c x^3)}{x^7} \, dx\) [105]

Optimal. Leaf size=41 \[ -\frac {b c}{6 x^3}+\frac {1}{6} b c^2 \tanh ^{-1}\left (c x^3\right )-\frac {a+b \tanh ^{-1}\left (c x^3\right )}{6 x^6} \]

[Out]

-1/6*b*c/x^3+1/6*b*c^2*arctanh(c*x^3)+1/6*(-a-b*arctanh(c*x^3))/x^6

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Rubi [A]
time = 0.02, antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {6037, 281, 331, 212} \begin {gather*} -\frac {a+b \tanh ^{-1}\left (c x^3\right )}{6 x^6}+\frac {1}{6} b c^2 \tanh ^{-1}\left (c x^3\right )-\frac {b c}{6 x^3} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(a + b*ArcTanh[c*x^3])/x^7,x]

[Out]

-1/6*(b*c)/x^3 + (b*c^2*ArcTanh[c*x^3])/6 - (a + b*ArcTanh[c*x^3])/(6*x^6)

Rule 212

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] && (GtQ[a, 0] || LtQ[b, 0])

Rule 281

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> With[{k = GCD[m + 1, n]}, Dist[1/k, Subst[Int[x^((m
+ 1)/k - 1)*(a + b*x^(n/k))^p, x], x, x^k], x] /; k != 1] /; FreeQ[{a, b, p}, x] && IGtQ[n, 0] && IntegerQ[m]

Rule 331

Int[((c_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Simp[(c*x)^(m + 1)*((a + b*x^n)^(p + 1)/(a*c
*(m + 1))), x] - Dist[b*((m + n*(p + 1) + 1)/(a*c^n*(m + 1))), Int[(c*x)^(m + n)*(a + b*x^n)^p, x], x] /; Free
Q[{a, b, c, p}, x] && IGtQ[n, 0] && LtQ[m, -1] && IntBinomialQ[a, b, c, n, m, p, x]

Rule 6037

Int[((a_.) + ArcTanh[(c_.)*(x_)^(n_.)]*(b_.))^(p_.)*(x_)^(m_.), x_Symbol] :> Simp[x^(m + 1)*((a + b*ArcTanh[c*
x^n])^p/(m + 1)), x] - Dist[b*c*n*(p/(m + 1)), Int[x^(m + n)*((a + b*ArcTanh[c*x^n])^(p - 1)/(1 - c^2*x^(2*n))
), x], x] /; FreeQ[{a, b, c, m, n}, x] && IGtQ[p, 0] && (EqQ[p, 1] || (EqQ[n, 1] && IntegerQ[m])) && NeQ[m, -1
]

Rubi steps

\begin {align*} \int \frac {a+b \tanh ^{-1}\left (c x^3\right )}{x^7} \, dx &=-\frac {a+b \tanh ^{-1}\left (c x^3\right )}{6 x^6}+\frac {1}{2} (b c) \int \frac {1}{x^4 \left (1-c^2 x^6\right )} \, dx\\ &=-\frac {a+b \tanh ^{-1}\left (c x^3\right )}{6 x^6}+\frac {1}{6} (b c) \text {Subst}\left (\int \frac {1}{x^2 \left (1-c^2 x^2\right )} \, dx,x,x^3\right )\\ &=-\frac {b c}{6 x^3}-\frac {a+b \tanh ^{-1}\left (c x^3\right )}{6 x^6}+\frac {1}{6} \left (b c^3\right ) \text {Subst}\left (\int \frac {1}{1-c^2 x^2} \, dx,x,x^3\right )\\ &=-\frac {b c}{6 x^3}+\frac {1}{6} b c^2 \tanh ^{-1}\left (c x^3\right )-\frac {a+b \tanh ^{-1}\left (c x^3\right )}{6 x^6}\\ \end {align*}

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Mathematica [A]
time = 0.01, size = 65, normalized size = 1.59 \begin {gather*} -\frac {a}{6 x^6}-\frac {b c}{6 x^3}-\frac {b \tanh ^{-1}\left (c x^3\right )}{6 x^6}-\frac {1}{12} b c^2 \log \left (1-c x^3\right )+\frac {1}{12} b c^2 \log \left (1+c x^3\right ) \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(a + b*ArcTanh[c*x^3])/x^7,x]

[Out]

-1/6*a/x^6 - (b*c)/(6*x^3) - (b*ArcTanh[c*x^3])/(6*x^6) - (b*c^2*Log[1 - c*x^3])/12 + (b*c^2*Log[1 + c*x^3])/1
2

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Maple [A]
time = 0.04, size = 55, normalized size = 1.34

method	result	size
default	\(-\frac {a}{6 x^{6}}-\frac {b \arctanh \left (c \,x^{3}\right )}{6 x^{6}}+\frac {b \,c^{2} \ln \left (c \,x^{3}+1\right )}{12}-\frac {b \,c^{2} \ln \left (c \,x^{3}-1\right )}{12}-\frac {b c}{6 x^{3}}\)	\(55\)
risch	\(-\frac {b \ln \left (c \,x^{3}+1\right )}{12 x^{6}}-\frac {b \,c^{2} \ln \left (c \,x^{3}-1\right ) x^{6}-b \,c^{2} \ln \left (c \,x^{3}+1\right ) x^{6}+2 b c \,x^{3}-b \ln \left (-c \,x^{3}+1\right )+2 a}{12 x^{6}}\)	\(77\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a+b*arctanh(c*x^3))/x^7,x,method=_RETURNVERBOSE)

[Out]

-1/6*a/x^6-1/6*b/x^6*arctanh(c*x^3)+1/12*b*c^2*ln(c*x^3+1)-1/12*b*c^2*ln(c*x^3-1)-1/6*b*c/x^3

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Maxima [A]
time = 0.25, size = 51, normalized size = 1.24 \begin {gather*} \frac {1}{12} \, {\left ({\left (c \log \left (c x^{3} + 1\right ) - c \log \left (c x^{3} - 1\right ) - \frac {2}{x^{3}}\right )} c - \frac {2 \, \operatorname {artanh}\left (c x^{3}\right )}{x^{6}}\right )} b - \frac {a}{6 \, x^{6}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*arctanh(c*x^3))/x^7,x, algorithm="maxima")

[Out]

1/12*((c*log(c*x^3 + 1) - c*log(c*x^3 - 1) - 2/x^3)*c - 2*arctanh(c*x^3)/x^6)*b - 1/6*a/x^6

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Fricas [A]
time = 0.34, size = 49, normalized size = 1.20 \begin {gather*} -\frac {2 \, b c x^{3} - {\left (b c^{2} x^{6} - b\right )} \log \left (-\frac {c x^{3} + 1}{c x^{3} - 1}\right ) + 2 \, a}{12 \, x^{6}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*arctanh(c*x^3))/x^7,x, algorithm="fricas")

[Out]

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

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Sympy [F(-1)] Timed out
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Timed out} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*atanh(c*x**3))/x**7,x)

[Out]

Timed out

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Giac [A]
time = 0.42, size = 67, normalized size = 1.63 \begin {gather*} \frac {1}{12} \, b c^{2} \log \left (c x^{3} + 1\right ) - \frac {1}{12} \, b c^{2} \log \left (c x^{3} - 1\right ) - \frac {b \log \left (-\frac {c x^{3} + 1}{c x^{3} - 1}\right )}{12 \, x^{6}} - \frac {b c x^{3} + a}{6 \, x^{6}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*arctanh(c*x^3))/x^7,x, algorithm="giac")

[Out]

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

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Mupad [B]
time = 1.02, size = 52, normalized size = 1.27 \begin {gather*} \frac {b\,c^2\,\mathrm {atanh}\left (c\,x^3\right )}{6}-\frac {\frac {a}{6}+\frac {b\,\ln \left (c\,x^3+1\right )}{12}-\frac {b\,\ln \left (1-c\,x^3\right )}{12}+\frac {b\,c\,x^3}{6}}{x^6} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a + b*atanh(c*x^3))/x^7,x)

[Out]

(b*c^2*atanh(c*x^3))/6 - (a/6 + (b*log(c*x^3 + 1))/12 - (b*log(1 - c*x^3))/12 + (b*c*x^3)/6)/x^6

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