3.991 \(\int \frac{x}{\sqrt{a-b x^2} \sqrt{c-d x^2}} \, dx\)

Optimal. Leaf size=48 \[ -\frac{\tanh ^{-1}\left (\frac{\sqrt{d} \sqrt{a-b x^2}}{\sqrt{b} \sqrt{c-d x^2}}\right )}{\sqrt{b} \sqrt{d}} \]

[Out]

-(ArcTanh[(Sqrt[d]*Sqrt[a - b*x^2])/(Sqrt[b]*Sqrt[c - d*x^2])]/(Sqrt[b]*Sqrt[d])
)

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Rubi [A]  time = 0.134121, antiderivative size = 48, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 26, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.115 \[ -\frac{\tanh ^{-1}\left (\frac{\sqrt{d} \sqrt{a-b x^2}}{\sqrt{b} \sqrt{c-d x^2}}\right )}{\sqrt{b} \sqrt{d}} \]

Antiderivative was successfully verified.

[In]  Int[x/(Sqrt[a - b*x^2]*Sqrt[c - d*x^2]),x]

[Out]

-(ArcTanh[(Sqrt[d]*Sqrt[a - b*x^2])/(Sqrt[b]*Sqrt[c - d*x^2])]/(Sqrt[b]*Sqrt[d])
)

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Rubi in Sympy [A]  time = 19.1459, size = 42, normalized size = 0.88 \[ - \frac{\operatorname{atanh}{\left (\frac{\sqrt{b} \sqrt{c - d x^{2}}}{\sqrt{d} \sqrt{a - b x^{2}}} \right )}}{\sqrt{b} \sqrt{d}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  rubi_integrate(x/(-b*x**2+a)**(1/2)/(-d*x**2+c)**(1/2),x)

[Out]

-atanh(sqrt(b)*sqrt(c - d*x**2)/(sqrt(d)*sqrt(a - b*x**2)))/(sqrt(b)*sqrt(d))

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Mathematica [A]  time = 0.0648391, size = 67, normalized size = 1.4 \[ \frac{\log \left (2 \sqrt{b} \sqrt{d} \sqrt{a-b x^2} \sqrt{c-d x^2}-a d-b c+2 b d x^2\right )}{2 \sqrt{b} \sqrt{d}} \]

Antiderivative was successfully verified.

[In]  Integrate[x/(Sqrt[a - b*x^2]*Sqrt[c - d*x^2]),x]

[Out]

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

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Maple [B]  time = 0.053, size = 111, normalized size = 2.3 \[{\frac{1}{2}\ln \left ({\frac{1}{2} \left ( 2\,bd{x}^{2}+2\,\sqrt{bd{x}^{4}-ad{x}^{2}-c{x}^{2}b+ac}\sqrt{bd}-ad-bc \right ){\frac{1}{\sqrt{bd}}}} \right ) \sqrt{-b{x}^{2}+a}\sqrt{-d{x}^{2}+c}{\frac{1}{\sqrt{bd{x}^{4}-ad{x}^{2}-c{x}^{2}b+ac}}}{\frac{1}{\sqrt{bd}}}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  int(x/(-b*x^2+a)^(1/2)/(-d*x^2+c)^(1/2),x)

[Out]

1/2*ln(1/2*(2*b*d*x^2+2*(b*d*x^4-a*d*x^2-b*c*x^2+a*c)^(1/2)*(b*d)^(1/2)-a*d-b*c)
/(b*d)^(1/2))*(-b*x^2+a)^(1/2)*(-d*x^2+c)^(1/2)/(b*d*x^4-a*d*x^2-b*c*x^2+a*c)^(1
/2)/(b*d)^(1/2)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \[ \text{Exception raised: ValueError} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x/(sqrt(-b*x^2 + a)*sqrt(-d*x^2 + c)),x, algorithm="maxima")

[Out]

Exception raised: ValueError

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Fricas [A]  time = 0.243986, size = 1, normalized size = 0.02 \[ \left [\frac{\log \left (4 \,{\left (2 \, b^{2} d^{2} x^{2} - b^{2} c d - a b d^{2}\right )} \sqrt{-b x^{2} + a} \sqrt{-d x^{2} + c} +{\left (8 \, b^{2} d^{2} x^{4} + b^{2} c^{2} + 6 \, a b c d + a^{2} d^{2} - 8 \,{\left (b^{2} c d + a b d^{2}\right )} x^{2}\right )} \sqrt{b d}\right )}{4 \, \sqrt{b d}}, \frac{\arctan \left (\frac{{\left (2 \, b d x^{2} - b c - a d\right )} \sqrt{-b d}}{2 \, \sqrt{-b x^{2} + a} \sqrt{-d x^{2} + c} b d}\right )}{2 \, \sqrt{-b d}}\right ] \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x/(sqrt(-b*x^2 + a)*sqrt(-d*x^2 + c)),x, algorithm="fricas")

[Out]

[1/4*log(4*(2*b^2*d^2*x^2 - b^2*c*d - a*b*d^2)*sqrt(-b*x^2 + a)*sqrt(-d*x^2 + c)
+ (8*b^2*d^2*x^4 + b^2*c^2 + 6*a*b*c*d + a^2*d^2 - 8*(b^2*c*d + a*b*d^2)*x^2)*s
qrt(b*d))/sqrt(b*d), 1/2*arctan(1/2*(2*b*d*x^2 - b*c - a*d)*sqrt(-b*d)/(sqrt(-b*
x^2 + a)*sqrt(-d*x^2 + c)*b*d))/sqrt(-b*d)]

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Sympy [F]  time = 0., size = 0, normalized size = 0. \[ \int \frac{x}{\sqrt{a - b x^{2}} \sqrt{c - d x^{2}}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x/(-b*x**2+a)**(1/2)/(-d*x**2+c)**(1/2),x)

[Out]

Integral(x/(sqrt(a - b*x**2)*sqrt(c - d*x**2)), x)

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GIAC/XCAS [A]  time = 0.241354, size = 77, normalized size = 1.6 \[ \frac{b{\rm ln}\left ({\left | -\sqrt{-b x^{2} + a} \sqrt{b d} + \sqrt{b^{2} c -{\left (b x^{2} - a\right )} b d - a b d} \right |}\right )}{\sqrt{b d}{\left | b \right |}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x/(sqrt(-b*x^2 + a)*sqrt(-d*x^2 + c)),x, algorithm="giac")

[Out]

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