3.1.6 \(\int \frac {(A+B x^2) (b x^2+c x^4)}{x^3} \, dx\)

Optimal. Leaf size=29 \[ \frac {1}{2} x^2 (A c+b B)+A b \log (x)+\frac {1}{4} B c x^4 \]

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Rubi [A]  time = 0.03, antiderivative size = 29, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 22, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {1584, 446, 76} \begin {gather*} \frac {1}{2} x^2 (A c+b B)+A b \log (x)+\frac {1}{4} B c x^4 \end {gather*}

Antiderivative was successfully verified.

[In]

Int[((A + B*x^2)*(b*x^2 + c*x^4))/x^3,x]

[Out]

((b*B + A*c)*x^2)/2 + (B*c*x^4)/4 + A*b*Log[x]

Rule 76

Int[((d_.)*(x_))^(n_.)*((a_) + (b_.)*(x_))*((e_) + (f_.)*(x_))^(p_.), x_Symbol] :> Int[ExpandIntegrand[(a + b*
x)*(d*x)^n*(e + f*x)^p, x], x] /; FreeQ[{a, b, d, e, f, n}, x] && IGtQ[p, 0] && (NeQ[n, -1] || EqQ[p, 1]) && N
eQ[b*e + a*f, 0] && ( !IntegerQ[n] || LtQ[9*p + 5*n, 0] || GeQ[n + p + 1, 0] || (GeQ[n + p + 2, 0] && Rational
Q[a, b, d, e, f])) && (NeQ[n + p + 3, 0] || EqQ[p, 1])

Rule 446

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_.)*((c_) + (d_.)*(x_)^(n_))^(q_.), x_Symbol] :> Dist[1/n, Subst[Int
[x^(Simplify[(m + 1)/n] - 1)*(a + b*x)^p*(c + d*x)^q, x], x, x^n], x] /; FreeQ[{a, b, c, d, m, n, p, q}, x] &&
NeQ[b*c - a*d, 0] && IntegerQ[Simplify[(m + 1)/n]]

Rule 1584

Int[(u_.)*(x_)^(m_.)*((a_.)*(x_)^(p_.) + (b_.)*(x_)^(q_.))^(n_.), x_Symbol] :> Int[u*x^(m + n*p)*(a + b*x^(q -
p))^n, x] /; FreeQ[{a, b, m, p, q}, x] && IntegerQ[n] && PosQ[q - p]

Rubi steps

\begin {align*} \int \frac {\left (A+B x^2\right ) \left (b x^2+c x^4\right )}{x^3} \, dx &=\int \frac {\left (A+B x^2\right ) \left (b+c x^2\right )}{x} \, dx\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {(A+B x) (b+c x)}{x} \, dx,x,x^2\right )\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \left (b B+A c+\frac {A b}{x}+B c x\right ) \, dx,x,x^2\right )\\ &=\frac {1}{2} (b B+A c) x^2+\frac {1}{4} B c x^4+A b \log (x)\\ \end {align*}

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Mathematica [A]  time = 0.01, size = 29, normalized size = 1.00 \begin {gather*} \frac {1}{2} x^2 (A c+b B)+A b \log (x)+\frac {1}{4} B c x^4 \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[((A + B*x^2)*(b*x^2 + c*x^4))/x^3,x]

[Out]

((b*B + A*c)*x^2)/2 + (B*c*x^4)/4 + A*b*Log[x]

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IntegrateAlgebraic [F]  time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {\left (A+B x^2\right ) \left (b x^2+c x^4\right )}{x^3} \, dx \end {gather*}

Verification is not applicable to the result.

[In]

IntegrateAlgebraic[((A + B*x^2)*(b*x^2 + c*x^4))/x^3,x]

[Out]

IntegrateAlgebraic[((A + B*x^2)*(b*x^2 + c*x^4))/x^3, x]

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fricas [A]  time = 0.40, size = 25, normalized size = 0.86 \begin {gather*} \frac {1}{4} \, B c x^{4} + \frac {1}{2} \, {\left (B b + A c\right )} x^{2} + A b \log \relax (x) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x^2+A)*(c*x^4+b*x^2)/x^3,x, algorithm="fricas")

[Out]

1/4*B*c*x^4 + 1/2*(B*b + A*c)*x^2 + A*b*log(x)

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giac [A]  time = 0.15, size = 30, normalized size = 1.03 \begin {gather*} \frac {1}{4} \, B c x^{4} + \frac {1}{2} \, B b x^{2} + \frac {1}{2} \, A c x^{2} + \frac {1}{2} \, A b \log \left (x^{2}\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x^2+A)*(c*x^4+b*x^2)/x^3,x, algorithm="giac")

[Out]

1/4*B*c*x^4 + 1/2*B*b*x^2 + 1/2*A*c*x^2 + 1/2*A*b*log(x^2)

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maple [A]  time = 0.04, size = 28, normalized size = 0.97 \begin {gather*} \frac {B c \,x^{4}}{4}+\frac {A c \,x^{2}}{2}+\frac {B b \,x^{2}}{2}+A b \ln \relax (x ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((B*x^2+A)*(c*x^4+b*x^2)/x^3,x)

[Out]

1/4*B*c*x^4+1/2*A*x^2*c+1/2*B*b*x^2+A*b*ln(x)

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maxima [A]  time = 1.33, size = 28, normalized size = 0.97 \begin {gather*} \frac {1}{4} \, B c x^{4} + \frac {1}{2} \, {\left (B b + A c\right )} x^{2} + \frac {1}{2} \, A b \log \left (x^{2}\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x^2+A)*(c*x^4+b*x^2)/x^3,x, algorithm="maxima")

[Out]

1/4*B*c*x^4 + 1/2*(B*b + A*c)*x^2 + 1/2*A*b*log(x^2)

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mupad [B]  time = 0.06, size = 26, normalized size = 0.90 \begin {gather*} x^2\,\left (\frac {A\,c}{2}+\frac {B\,b}{2}\right )+\frac {B\,c\,x^4}{4}+A\,b\,\ln \relax (x) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(((A + B*x^2)*(b*x^2 + c*x^4))/x^3,x)

[Out]

x^2*((A*c)/2 + (B*b)/2) + (B*c*x^4)/4 + A*b*log(x)

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sympy [A]  time = 0.12, size = 27, normalized size = 0.93 \begin {gather*} A b \log {\relax (x )} + \frac {B c x^{4}}{4} + x^{2} \left (\frac {A c}{2} + \frac {B b}{2}\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x**2+A)*(c*x**4+b*x**2)/x**3,x)

[Out]

A*b*log(x) + B*c*x**4/4 + x**2*(A*c/2 + B*b/2)

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