3.3.17 \(\int \frac {a+b x^3}{x^8} \, dx\) [217]

Optimal. Leaf size=17 \[ -\frac {a}{7 x^7}-\frac {b}{4 x^4} \]

[Out]

-1/7*a/x^7-1/4*b/x^4

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Rubi [A]
time = 0.00, antiderivative size = 17, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {14} \begin {gather*} -\frac {a}{7 x^7}-\frac {b}{4 x^4} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(a + b*x^3)/x^8,x]

[Out]

-1/7*a/x^7 - b/(4*x^4)

Rule 14

Int[(u_)*((c_.)*(x_))^(m_.), x_Symbol] :> Int[ExpandIntegrand[(c*x)^m*u, x], x] /; FreeQ[{c, m}, x] && SumQ[u]
&&  !LinearQ[u, x] &&  !MatchQ[u, (a_) + (b_.)*(v_) /; FreeQ[{a, b}, x] && InverseFunctionQ[v]]

Rubi steps

\begin {align*} \int \frac {a+b x^3}{x^8} \, dx &=\int \left (\frac {a}{x^8}+\frac {b}{x^5}\right ) \, dx\\ &=-\frac {a}{7 x^7}-\frac {b}{4 x^4}\\ \end {align*}

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Mathematica [A]
time = 0.00, size = 17, normalized size = 1.00 \begin {gather*} -\frac {a}{7 x^7}-\frac {b}{4 x^4} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(a + b*x^3)/x^8,x]

[Out]

-1/7*a/x^7 - b/(4*x^4)

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Maple [A]
time = 0.02, size = 14, normalized size = 0.82

method	result	size
default	\(-\frac {a}{7 x^{7}}-\frac {b}{4 x^{4}}\)	\(14\)
norman	\(\frac {-\frac {b \,x^{3}}{4}-\frac {a}{7}}{x^{7}}\)	\(15\)
risch	\(\frac {-\frac {b \,x^{3}}{4}-\frac {a}{7}}{x^{7}}\)	\(15\)
gosper	\(-\frac {7 b \,x^{3}+4 a}{28 x^{7}}\)	\(16\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b*x^3+a)/x^8,x,method=_RETURNVERBOSE)

[Out]

-1/7*a/x^7-1/4*b/x^4

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Maxima [A]
time = 0.31, size = 15, normalized size = 0.88 \begin {gather*} -\frac {7 \, b x^{3} + 4 \, a}{28 \, x^{7}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x^3+a)/x^8,x, algorithm="maxima")

[Out]

-1/28*(7*b*x^3 + 4*a)/x^7

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Fricas [A]
time = 0.33, size = 15, normalized size = 0.88 \begin {gather*} -\frac {7 \, b x^{3} + 4 \, a}{28 \, x^{7}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x^3+a)/x^8,x, algorithm="fricas")

[Out]

-1/28*(7*b*x^3 + 4*a)/x^7

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Sympy [A]
time = 0.05, size = 15, normalized size = 0.88 \begin {gather*} \frac {- 4 a - 7 b x^{3}}{28 x^{7}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x**3+a)/x**8,x)

[Out]

(-4*a - 7*b*x**3)/(28*x**7)

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Giac [A]
time = 2.64, size = 15, normalized size = 0.88 \begin {gather*} -\frac {7 \, b x^{3} + 4 \, a}{28 \, x^{7}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x^3+a)/x^8,x, algorithm="giac")

[Out]

-1/28*(7*b*x^3 + 4*a)/x^7

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Mupad [B]
time = 0.03, size = 15, normalized size = 0.88 \begin {gather*} -\frac {7\,b\,x^3+4\,a}{28\,x^7} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a + b*x^3)/x^8,x)

[Out]

-(4*a + 7*b*x^3)/(28*x^7)

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