3.3.4 \(\int \frac {c+d x^2}{x (a+b x^2)} \, dx\)

Optimal. Leaf size=34 \[ \frac {c \log (x)}{a}-\frac {(b c-a d) \log \left (a+b x^2\right )}{2 a b} \]

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Rubi [A]  time = 0.03, antiderivative size = 34, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.100, Rules used = {446, 72} \begin {gather*} \frac {c \log (x)}{a}-\frac {(b c-a d) \log \left (a+b x^2\right )}{2 a b} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(c + d*x^2)/(x*(a + b*x^2)),x]

[Out]

(c*Log[x])/a - ((b*c - a*d)*Log[a + b*x^2])/(2*a*b)

Rule 72

Int[((e_.) + (f_.)*(x_))^(p_.)/(((a_.) + (b_.)*(x_))*((c_.) + (d_.)*(x_))), x_Symbol] :> Int[ExpandIntegrand[(
e + f*x)^p/((a + b*x)*(c + d*x)), x], x] /; FreeQ[{a, b, c, d, e, f}, x] && IntegerQ[p]

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]]

Rubi steps

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

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Mathematica [A]  time = 0.01, size = 34, normalized size = 1.00 \begin {gather*} \frac {(a d-b c) \log \left (a+b x^2\right )}{2 a b}+\frac {c \log (x)}{a} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(c + d*x^2)/(x*(a + b*x^2)),x]

[Out]

(c*Log[x])/a + ((-(b*c) + a*d)*Log[a + b*x^2])/(2*a*b)

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

Verification is not applicable to the result.

[In]

IntegrateAlgebraic[(c + d*x^2)/(x*(a + b*x^2)),x]

[Out]

IntegrateAlgebraic[(c + d*x^2)/(x*(a + b*x^2)), x]

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fricas [A]  time = 0.74, size = 33, normalized size = 0.97 \begin {gather*} \frac {2 \, b c \log \relax (x) - {\left (b c - a d\right )} \log \left (b x^{2} + a\right )}{2 \, a b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((d*x^2+c)/x/(b*x^2+a),x, algorithm="fricas")

[Out]

1/2*(2*b*c*log(x) - (b*c - a*d)*log(b*x^2 + a))/(a*b)

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giac [A]  time = 0.30, size = 36, normalized size = 1.06 \begin {gather*} \frac {c \log \left (x^{2}\right )}{2 \, a} - \frac {{\left (b c - a d\right )} \log \left ({\left | b x^{2} + a \right |}\right )}{2 \, a b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((d*x^2+c)/x/(b*x^2+a),x, algorithm="giac")

[Out]

1/2*c*log(x^2)/a - 1/2*(b*c - a*d)*log(abs(b*x^2 + a))/(a*b)

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maple [A]  time = 0.00, size = 37, normalized size = 1.09 \begin {gather*} \frac {c \ln \relax (x )}{a}-\frac {c \ln \left (b \,x^{2}+a \right )}{2 a}+\frac {d \ln \left (b \,x^{2}+a \right )}{2 b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((d*x^2+c)/x/(b*x^2+a),x)

[Out]

1/2/b*ln(b*x^2+a)*d-1/2/a*c*ln(b*x^2+a)+1/a*c*ln(x)

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maxima [A]  time = 1.11, size = 35, normalized size = 1.03 \begin {gather*} \frac {c \log \left (x^{2}\right )}{2 \, a} - \frac {{\left (b c - a d\right )} \log \left (b x^{2} + a\right )}{2 \, a b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((d*x^2+c)/x/(b*x^2+a),x, algorithm="maxima")

[Out]

1/2*c*log(x^2)/a - 1/2*(b*c - a*d)*log(b*x^2 + a)/(a*b)

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mupad [B]  time = 0.08, size = 32, normalized size = 0.94 \begin {gather*} \frac {c\,\ln \relax (x)}{a}+\frac {\ln \left (b\,x^2+a\right )\,\left (a\,d-b\,c\right )}{2\,a\,b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((c + d*x^2)/(x*(a + b*x^2)),x)

[Out]

(c*log(x))/a + (log(a + b*x^2)*(a*d - b*c))/(2*a*b)

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sympy [A]  time = 0.67, size = 26, normalized size = 0.76 \begin {gather*} \frac {c \log {\relax (x )}}{a} + \frac {\left (a d - b c\right ) \log {\left (\frac {a}{b} + x^{2} \right )}}{2 a b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((d*x**2+c)/x/(b*x**2+a),x)

[Out]

c*log(x)/a + (a*d - b*c)*log(a/b + x**2)/(2*a*b)

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