3.41 \(\int \frac {\cos (a+\frac {b}{x^2})}{x} \, dx\)

Optimal. Leaf size=25 \[ \frac {1}{2} \sin (a) \text {Si}\left (\frac {b}{x^2}\right )-\frac {1}{2} \cos (a) \text {Ci}\left (\frac {b}{x^2}\right ) \]

[Out]

-1/2*Ci(b/x^2)*cos(a)+1/2*Si(b/x^2)*sin(a)

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Rubi [A]  time = 0.03, antiderivative size = 25, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {3378, 3376, 3375} \[ \frac {1}{2} \sin (a) \text {Si}\left (\frac {b}{x^2}\right )-\frac {1}{2} \cos (a) \text {CosIntegral}\left (\frac {b}{x^2}\right ) \]

Antiderivative was successfully verified.

[In]

Int[Cos[a + b/x^2]/x,x]

[Out]

-(Cos[a]*CosIntegral[b/x^2])/2 + (Sin[a]*SinIntegral[b/x^2])/2

Rule 3375

Int[Sin[(d_.)*(x_)^(n_)]/(x_), x_Symbol] :> Simp[SinIntegral[d*x^n]/n, x] /; FreeQ[{d, n}, x]

Rule 3376

Int[Cos[(d_.)*(x_)^(n_)]/(x_), x_Symbol] :> Simp[CosIntegral[d*x^n]/n, x] /; FreeQ[{d, n}, x]

Rule 3378

Int[Cos[(c_) + (d_.)*(x_)^(n_)]/(x_), x_Symbol] :> Dist[Cos[c], Int[Cos[d*x^n]/x, x], x] - Dist[Sin[c], Int[Si
n[d*x^n]/x, x], x] /; FreeQ[{c, d, n}, x]

Rubi steps

\begin {align*} \int \frac {\cos \left (a+\frac {b}{x^2}\right )}{x} \, dx &=\cos (a) \int \frac {\cos \left (\frac {b}{x^2}\right )}{x} \, dx-\sin (a) \int \frac {\sin \left (\frac {b}{x^2}\right )}{x} \, dx\\ &=-\frac {1}{2} \cos (a) \text {Ci}\left (\frac {b}{x^2}\right )+\frac {1}{2} \sin (a) \text {Si}\left (\frac {b}{x^2}\right )\\ \end {align*}

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Mathematica [A]  time = 0.04, size = 24, normalized size = 0.96 \[ \frac {1}{2} \left (\sin (a) \text {Si}\left (\frac {b}{x^2}\right )-\cos (a) \text {Ci}\left (\frac {b}{x^2}\right )\right ) \]

Antiderivative was successfully verified.

[In]

Integrate[Cos[a + b/x^2]/x,x]

[Out]

(-(Cos[a]*CosIntegral[b/x^2]) + Sin[a]*SinIntegral[b/x^2])/2

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fricas [A]  time = 0.57, size = 29, normalized size = 1.16 \[ -\frac {1}{4} \, {\left (\operatorname {Ci}\left (\frac {b}{x^{2}}\right ) + \operatorname {Ci}\left (-\frac {b}{x^{2}}\right )\right )} \cos \relax (a) + \frac {1}{2} \, \sin \relax (a) \operatorname {Si}\left (\frac {b}{x^{2}}\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(a+b/x^2)/x,x, algorithm="fricas")

[Out]

-1/4*(cos_integral(b/x^2) + cos_integral(-b/x^2))*cos(a) + 1/2*sin(a)*sin_integral(b/x^2)

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giac [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {\cos \left (a + \frac {b}{x^{2}}\right )}{x}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(a+b/x^2)/x,x, algorithm="giac")

[Out]

integrate(cos(a + b/x^2)/x, x)

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maple [A]  time = 0.02, size = 22, normalized size = 0.88 \[ -\frac {\Ci \left (\frac {b}{x^{2}}\right ) \cos \relax (a )}{2}+\frac {\Si \left (\frac {b}{x^{2}}\right ) \sin \relax (a )}{2} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cos(a+b/x^2)/x,x)

[Out]

-1/2*Ci(b/x^2)*cos(a)+1/2*Si(b/x^2)*sin(a)

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maxima [C]  time = 1.34, size = 43, normalized size = 1.72 \[ -\frac {1}{4} \, {\left ({\rm Ei}\left (\frac {i \, b}{x^{2}}\right ) + {\rm Ei}\left (-\frac {i \, b}{x^{2}}\right )\right )} \cos \relax (a) - \frac {1}{4} \, {\left (i \, {\rm Ei}\left (\frac {i \, b}{x^{2}}\right ) - i \, {\rm Ei}\left (-\frac {i \, b}{x^{2}}\right )\right )} \sin \relax (a) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(a+b/x^2)/x,x, algorithm="maxima")

[Out]

-1/4*(Ei(I*b/x^2) + Ei(-I*b/x^2))*cos(a) - 1/4*(I*Ei(I*b/x^2) - I*Ei(-I*b/x^2))*sin(a)

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mupad [F]  time = 0.00, size = -1, normalized size = -0.04 \[ \frac {\sin \relax (a)\,\mathrm {sinint}\left (\frac {b}{x^2}\right )}{2}-\frac {\cos \relax (a)\,\mathrm {cosint}\left (\frac {b}{x^2}\right )}{2} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cos(a + b/x^2)/x,x)

[Out]

(sin(a)*sinint(b/x^2))/2 - (cos(a)*cosint(b/x^2))/2

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sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {\cos {\left (a + \frac {b}{x^{2}} \right )}}{x}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(a+b/x**2)/x,x)

[Out]

Integral(cos(a + b/x**2)/x, x)

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