3.1299 \(\int \frac{1}{x^6 (1+x^5)} \, dx\)

Optimal. Leaf size=22 \[ -\frac{1}{5 x^5}+\frac{1}{5} \log \left (x^5+1\right )-\log (x) \]

[Out]

-1/(5*x^5) - Log[x] + Log[1 + x^5]/5

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Rubi [A]  time = 0.0096588, antiderivative size = 22, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 11, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.182, Rules used = {266, 44} \[ -\frac{1}{5 x^5}+\frac{1}{5} \log \left (x^5+1\right )-\log (x) \]

Antiderivative was successfully verified.

[In]

Int[1/(x^6*(1 + x^5)),x]

[Out]

-1/(5*x^5) - Log[x] + Log[1 + x^5]/5

Rule 266

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

Rule 44

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] && L
tQ[m + n + 2, 0])

Rubi steps

\begin{align*} \int \frac{1}{x^6 \left (1+x^5\right )} \, dx &=\frac{1}{5} \operatorname{Subst}\left (\int \frac{1}{x^2 (1+x)} \, dx,x,x^5\right )\\ &=\frac{1}{5} \operatorname{Subst}\left (\int \left (\frac{1}{x^2}-\frac{1}{x}+\frac{1}{1+x}\right ) \, dx,x,x^5\right )\\ &=-\frac{1}{5 x^5}-\log (x)+\frac{1}{5} \log \left (1+x^5\right )\\ \end{align*}

Mathematica [A]  time = 0.0032063, size = 22, normalized size = 1. \[ -\frac{1}{5 x^5}+\frac{1}{5} \log \left (x^5+1\right )-\log (x) \]

Antiderivative was successfully verified.

[In]

Integrate[1/(x^6*(1 + x^5)),x]

[Out]

-1/(5*x^5) - Log[x] + Log[1 + x^5]/5

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Maple [A]  time = 0.007, size = 36, normalized size = 1.6 \begin{align*} -{\frac{1}{5\,{x}^{5}}}-\ln \left ( x \right ) +{\frac{\ln \left ( 1+x \right ) }{5}}+{\frac{\ln \left ({x}^{4}-{x}^{3}+{x}^{2}-x+1 \right ) }{5}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/x^6/(x^5+1),x)

[Out]

-1/5/x^5-ln(x)+1/5*ln(1+x)+1/5*ln(x^4-x^3+x^2-x+1)

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Maxima [A]  time = 0.981994, size = 27, normalized size = 1.23 \begin{align*} -\frac{1}{5 \, x^{5}} + \frac{1}{5} \, \log \left (x^{5} + 1\right ) - \frac{1}{5} \, \log \left (x^{5}\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^6/(x^5+1),x, algorithm="maxima")

[Out]

-1/5/x^5 + 1/5*log(x^5 + 1) - 1/5*log(x^5)

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Fricas [A]  time = 1.65769, size = 63, normalized size = 2.86 \begin{align*} \frac{x^{5} \log \left (x^{5} + 1\right ) - 5 \, x^{5} \log \left (x\right ) - 1}{5 \, x^{5}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^6/(x^5+1),x, algorithm="fricas")

[Out]

1/5*(x^5*log(x^5 + 1) - 5*x^5*log(x) - 1)/x^5

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Sympy [A]  time = 0.154177, size = 17, normalized size = 0.77 \begin{align*} - \log{\left (x \right )} + \frac{\log{\left (x^{5} + 1 \right )}}{5} - \frac{1}{5 x^{5}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x**6/(x**5+1),x)

[Out]

-log(x) + log(x**5 + 1)/5 - 1/(5*x**5)

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Giac [A]  time = 1.16425, size = 34, normalized size = 1.55 \begin{align*} \frac{x^{5} - 1}{5 \, x^{5}} + \frac{1}{5} \, \log \left ({\left | x^{5} + 1 \right |}\right ) - \log \left ({\left | x \right |}\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^6/(x^5+1),x, algorithm="giac")

[Out]

1/5*(x^5 - 1)/x^5 + 1/5*log(abs(x^5 + 1)) - log(abs(x))