3.1.25 \(\int \frac {\log (c (a+b x^3)^p)}{x^7} \, dx\) [25]

Optimal. Leaf size=64 \[ -\frac {b p}{6 a x^3}-\frac {b^2 p \log (x)}{2 a^2}+\frac {b^2 p \log \left (a+b x^3\right )}{6 a^2}-\frac {\log \left (c \left (a+b x^3\right )^p\right )}{6 x^6} \]

[Out]

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

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Rubi [A]
time = 0.04, antiderivative size = 64, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.188, Rules used = {2504, 2442, 46} \begin {gather*} \frac {b^2 p \log \left (a+b x^3\right )}{6 a^2}-\frac {b^2 p \log (x)}{2 a^2}-\frac {\log \left (c \left (a+b x^3\right )^p\right )}{6 x^6}-\frac {b p}{6 a x^3} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[Log[c*(a + b*x^3)^p]/x^7,x]

[Out]

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

Rule 46

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}, x] && NeQ[b*c - a*d, 0] && ILtQ[m, 0] && IntegerQ[n] &&  !(IGtQ[n, 0] && Lt
Q[m + n + 2, 0])

Rule 2442

Int[((a_.) + Log[(c_.)*((d_) + (e_.)*(x_))^(n_.)]*(b_.))*((f_.) + (g_.)*(x_))^(q_.), x_Symbol] :> Simp[(f + g*
x)^(q + 1)*((a + b*Log[c*(d + e*x)^n])/(g*(q + 1))), x] - Dist[b*e*(n/(g*(q + 1))), Int[(f + g*x)^(q + 1)/(d +
e*x), x], x] /; FreeQ[{a, b, c, d, e, f, g, n, q}, x] && NeQ[e*f - d*g, 0] && NeQ[q, -1]

Rule 2504

Int[((a_.) + Log[(c_.)*((d_) + (e_.)*(x_)^(n_))^(p_.)]*(b_.))^(q_.)*(x_)^(m_.), x_Symbol] :> Dist[1/n, Subst[I
nt[x^(Simplify[(m + 1)/n] - 1)*(a + b*Log[c*(d + e*x)^p])^q, x], x, x^n], x] /; FreeQ[{a, b, c, d, e, m, n, p,
q}, x] && IntegerQ[Simplify[(m + 1)/n]] && (GtQ[(m + 1)/n, 0] || IGtQ[q, 0]) &&  !(EqQ[q, 1] && ILtQ[n, 0] &&
IGtQ[m, 0])

Rubi steps

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

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Mathematica [A]
time = 0.03, size = 56, normalized size = 0.88 \begin {gather*} \frac {1}{6} b p \left (-\frac {1}{a x^3}-\frac {3 b \log (x)}{a^2}+\frac {b \log \left (a+b x^3\right )}{a^2}\right )-\frac {\log \left (c \left (a+b x^3\right )^p\right )}{6 x^6} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[Log[c*(a + b*x^3)^p]/x^7,x]

[Out]

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

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Maple [C] Result contains higher order function than in optimal. Order 9 vs. order 3.
time = 0.26, size = 198, normalized size = 3.09

method	result	size
risch	\(-\frac {\ln \left (\left (x^{3} b +a \right )^{p}\right )}{6 x^{6}}-\frac {6 b^{2} p \ln \left (x \right ) x^{6}-2 b^{2} p \ln \left (-x^{3} b -a \right ) x^{6}+i \pi \,a^{2} \mathrm {csgn}\left (i \left (x^{3} b +a \right )^{p}\right ) \mathrm {csgn}\left (i c \left (x^{3} b +a \right )^{p}\right )^{2}-i \pi \,a^{2} \mathrm {csgn}\left (i \left (x^{3} b +a \right )^{p}\right ) \mathrm {csgn}\left (i c \left (x^{3} b +a \right )^{p}\right ) \mathrm {csgn}\left (i c \right )-i \pi \,a^{2} \mathrm {csgn}\left (i c \left (x^{3} b +a \right )^{p}\right )^{3}+i \pi \,a^{2} \mathrm {csgn}\left (i c \left (x^{3} b +a \right )^{p}\right )^{2} \mathrm {csgn}\left (i c \right )+2 a b p \,x^{3}+2 \ln \left (c \right ) a^{2}}{12 a^{2} x^{6}}\)	\(198\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-1/6/x^6*ln((b*x^3+a)^p)-1/12*(6*b^2*p*ln(x)*x^6-2*b^2*p*ln(-b*x^3-a)*x^6+I*Pi*a^2*csgn(I*(b*x^3+a)^p)*csgn(I*
c*(b*x^3+a)^p)^2-I*Pi*a^2*csgn(I*(b*x^3+a)^p)*csgn(I*c*(b*x^3+a)^p)*csgn(I*c)-I*Pi*a^2*csgn(I*c*(b*x^3+a)^p)^3
+I*Pi*a^2*csgn(I*c*(b*x^3+a)^p)^2*csgn(I*c)+2*a*b*p*x^3+2*ln(c)*a^2)/a^2/x^6

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Maxima [A]
time = 0.27, size = 54, normalized size = 0.84 \begin {gather*} \frac {1}{6} \, b p {\left (\frac {b \log \left (b x^{3} + a\right )}{a^{2}} - \frac {b \log \left (x^{3}\right )}{a^{2}} - \frac {1}{a x^{3}}\right )} - \frac {\log \left ({\left (b x^{3} + a\right )}^{p} c\right )}{6 \, x^{6}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Fricas [A]
time = 0.39, size = 58, normalized size = 0.91 \begin {gather*} -\frac {3 \, b^{2} p x^{6} \log \left (x\right ) + a b p x^{3} + a^{2} \log \left (c\right ) - {\left (b^{2} p x^{6} - a^{2} p\right )} \log \left (b x^{3} + a\right )}{6 \, a^{2} x^{6}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Sympy [A]
time = 9.27, size = 83, normalized size = 1.30 \begin {gather*} \begin {cases} - \frac {\log {\left (c \left (a + b x^{3}\right )^{p} \right )}}{6 x^{6}} - \frac {b p}{6 a x^{3}} - \frac {b^{2} p \log {\left (x \right )}}{2 a^{2}} + \frac {b^{2} \log {\left (c \left (a + b x^{3}\right )^{p} \right )}}{6 a^{2}} & \text {for}\: a \neq 0 \\- \frac {p}{12 x^{6}} - \frac {\log {\left (c \left (b x^{3}\right )^{p} \right )}}{6 x^{6}} & \text {otherwise} \end {cases} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

Piecewise((-log(c*(a + b*x**3)**p)/(6*x**6) - b*p/(6*a*x**3) - b**2*p*log(x)/(2*a**2) + b**2*log(c*(a + b*x**3
)**p)/(6*a**2), Ne(a, 0)), (-p/(12*x**6) - log(c*(b*x**3)**p)/(6*x**6), True))

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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 132 vs. \(2 (56) = 112\).
time = 5.69, size = 132, normalized size = 2.06 \begin {gather*} -\frac {\frac {b^{3} p \log \left (b x^{3} + a\right )}{{\left (b x^{3} + a\right )}^{2} - 2 \, {\left (b x^{3} + a\right )} a + a^{2}} - \frac {b^{3} p \log \left (b x^{3} + a\right )}{a^{2}} + \frac {b^{3} p \log \left (b x^{3}\right )}{a^{2}} + \frac {{\left (b x^{3} + a\right )} b^{3} p - a b^{3} p + a b^{3} \log \left (c\right )}{{\left (b x^{3} + a\right )}^{2} a - 2 \, {\left (b x^{3} + a\right )} a^{2} + a^{3}}}{6 \, b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Mupad [B]
time = 0.28, size = 56, normalized size = 0.88 \begin {gather*} \frac {b^2\,p\,\ln \left (b\,x^3+a\right )}{6\,a^2}-\frac {\ln \left (c\,{\left (b\,x^3+a\right )}^p\right )}{6\,x^6}-\frac {b^2\,p\,\ln \left (x\right )}{2\,a^2}-\frac {b\,p}{6\,a\,x^3} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(log(c*(a + b*x^3)^p)/x^7,x)

[Out]

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

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