3.7.5 \(\int x^4 (a+b x^4) \, dx\) [605]

Optimal. Leaf size=17 \[ \frac {a x^5}{5}+\frac {b x^9}{9} \]

[Out]

1/5*a*x^5+1/9*b*x^9

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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 x^5}{5}+\frac {b x^9}{9} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[x^4*(a + b*x^4),x]

[Out]

(a*x^5)/5 + (b*x^9)/9

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 x^4 \left (a+b x^4\right ) \, dx &=\int \left (a x^4+b x^8\right ) \, dx\\ &=\frac {a x^5}{5}+\frac {b x^9}{9}\\ \end {align*}

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Mathematica [A]
time = 0.00, size = 17, normalized size = 1.00 \begin {gather*} \frac {a x^5}{5}+\frac {b x^9}{9} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[x^4*(a + b*x^4),x]

[Out]

(a*x^5)/5 + (b*x^9)/9

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Maple [A]
time = 0.05, size = 14, normalized size = 0.82

method	result	size
gosper	\(\frac {1}{5} a \,x^{5}+\frac {1}{9} b \,x^{9}\)	\(14\)
default	\(\frac {1}{5} a \,x^{5}+\frac {1}{9} b \,x^{9}\)	\(14\)
norman	\(\frac {1}{5} a \,x^{5}+\frac {1}{9} b \,x^{9}\)	\(14\)
risch	\(\frac {1}{5} a \,x^{5}+\frac {1}{9} b \,x^{9}\)	\(14\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^4*(b*x^4+a),x,method=_RETURNVERBOSE)

[Out]

1/5*a*x^5+1/9*b*x^9

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Maxima [A]
time = 0.29, size = 13, normalized size = 0.76 \begin {gather*} \frac {1}{9} \, b x^{9} + \frac {1}{5} \, a x^{5} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^4*(b*x^4+a),x, algorithm="maxima")

[Out]

1/9*b*x^9 + 1/5*a*x^5

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Fricas [A]
time = 0.36, size = 13, normalized size = 0.76 \begin {gather*} \frac {1}{9} \, b x^{9} + \frac {1}{5} \, a x^{5} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^4*(b*x^4+a),x, algorithm="fricas")

[Out]

1/9*b*x^9 + 1/5*a*x^5

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Sympy [A]
time = 0.01, size = 12, normalized size = 0.71 \begin {gather*} \frac {a x^{5}}{5} + \frac {b x^{9}}{9} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**4*(b*x**4+a),x)

[Out]

a*x**5/5 + b*x**9/9

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Giac [A]
time = 1.21, size = 13, normalized size = 0.76 \begin {gather*} \frac {1}{9} \, b x^{9} + \frac {1}{5} \, a x^{5} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^4*(b*x^4+a),x, algorithm="giac")

[Out]

1/9*b*x^9 + 1/5*a*x^5

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Mupad [B]
time = 0.02, size = 13, normalized size = 0.76 \begin {gather*} \frac {b\,x^9}{9}+\frac {a\,x^5}{5} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^4*(a + b*x^4),x)

[Out]

(a*x^5)/5 + (b*x^9)/9

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