3.458 \(\int \sqrt{a-a \sin ^2(e+f x)} \tan ^3(e+f x) \, dx\)

Optimal. Leaf size=38 \[ \frac{a}{f \sqrt{a \cos ^2(e+f x)}}+\frac{\sqrt{a \cos ^2(e+f x)}}{f} \]

[Out]

a/(f*Sqrt[a*Cos[e + f*x]^2]) + Sqrt[a*Cos[e + f*x]^2]/f

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Rubi [A]  time = 0.104688, antiderivative size = 38, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 4, integrand size = 26, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.154, Rules used = {3176, 3205, 16, 43} \[ \frac{a}{f \sqrt{a \cos ^2(e+f x)}}+\frac{\sqrt{a \cos ^2(e+f x)}}{f} \]

Antiderivative was successfully verified.

[In]

Int[Sqrt[a - a*Sin[e + f*x]^2]*Tan[e + f*x]^3,x]

[Out]

a/(f*Sqrt[a*Cos[e + f*x]^2]) + Sqrt[a*Cos[e + f*x]^2]/f

Rule 3176

Int[(u_.)*((a_) + (b_.)*sin[(e_.) + (f_.)*(x_)]^2)^(p_), x_Symbol] :> Int[ActivateTrig[u*(a*cos[e + f*x]^2)^p]
, x] /; FreeQ[{a, b, e, f, p}, x] && EqQ[a + b, 0]

Rule 3205

Int[((b_.)*sin[(e_.) + (f_.)*(x_)]^(n_))^(p_.)*tan[(e_.) + (f_.)*(x_)]^(m_.), x_Symbol] :> With[{ff = FreeFact
ors[Sin[e + f*x]^2, x]}, Dist[ff^((m + 1)/2)/(2*f), Subst[Int[(x^((m - 1)/2)*(b*ff^(n/2)*x^(n/2))^p)/(1 - ff*x
)^((m + 1)/2), x], x, Sin[e + f*x]^2/ff], x]] /; FreeQ[{b, e, f, p}, x] && IntegerQ[(m - 1)/2] && IntegerQ[n/2
]

Rule 16

Int[(u_.)*(v_)^(m_.)*((b_)*(v_))^(n_), x_Symbol] :> Dist[1/b^m, Int[u*(b*v)^(m + n), x], x] /; FreeQ[{b, n}, x
] && IntegerQ[m]

Rule 43

Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_.), x_Symbol] :> Int[ExpandIntegrand[(a + b*x)^m*(c + d
*x)^n, x], x] /; FreeQ[{a, b, c, d, n}, x] && NeQ[b*c - a*d, 0] && IGtQ[m, 0] && ( !IntegerQ[n] || (EqQ[c, 0]
&& LeQ[7*m + 4*n + 4, 0]) || LtQ[9*m + 5*(n + 1), 0] || GtQ[m + n + 2, 0])

Rubi steps

\begin{align*} \int \sqrt{a-a \sin ^2(e+f x)} \tan ^3(e+f x) \, dx &=\int \sqrt{a \cos ^2(e+f x)} \tan ^3(e+f x) \, dx\\ &=-\frac{\operatorname{Subst}\left (\int \frac{(1-x) \sqrt{a x}}{x^2} \, dx,x,\cos ^2(e+f x)\right )}{2 f}\\ &=-\frac{a^2 \operatorname{Subst}\left (\int \frac{1-x}{(a x)^{3/2}} \, dx,x,\cos ^2(e+f x)\right )}{2 f}\\ &=-\frac{a^2 \operatorname{Subst}\left (\int \left (\frac{1}{(a x)^{3/2}}-\frac{1}{a \sqrt{a x}}\right ) \, dx,x,\cos ^2(e+f x)\right )}{2 f}\\ &=\frac{a}{f \sqrt{a \cos ^2(e+f x)}}+\frac{\sqrt{a \cos ^2(e+f x)}}{f}\\ \end{align*}

Mathematica [A]  time = 0.081039, size = 29, normalized size = 0.76 \[ \frac{a \left (\cos ^2(e+f x)+1\right )}{f \sqrt{a \cos ^2(e+f x)}} \]

Antiderivative was successfully verified.

[In]

Integrate[Sqrt[a - a*Sin[e + f*x]^2]*Tan[e + f*x]^3,x]

[Out]

(a*(1 + Cos[e + f*x]^2))/(f*Sqrt[a*Cos[e + f*x]^2])

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Maple [A]  time = 2.115, size = 35, normalized size = 0.9 \begin{align*}{\frac{ \left ( \cos \left ( fx+e \right ) \right ) ^{2}+1}{ \left ( \cos \left ( fx+e \right ) \right ) ^{2}f}\sqrt{a \left ( \cos \left ( fx+e \right ) \right ) ^{2}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a-a*sin(f*x+e)^2)^(1/2)*tan(f*x+e)^3,x)

[Out]

1/cos(f*x+e)^2*(a*cos(f*x+e)^2)^(1/2)*(cos(f*x+e)^2+1)/f

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Maxima [A]  time = 1.00257, size = 62, normalized size = 1.63 \begin{align*} \frac{\sqrt{-a \sin \left (f x + e\right )^{2} + a} a^{2} + \frac{a^{3}}{\sqrt{-a \sin \left (f x + e\right )^{2} + a}}}{a^{2} f} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a-a*sin(f*x+e)^2)^(1/2)*tan(f*x+e)^3,x, algorithm="maxima")

[Out]

(sqrt(-a*sin(f*x + e)^2 + a)*a^2 + a^3/sqrt(-a*sin(f*x + e)^2 + a))/(a^2*f)

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Fricas [A]  time = 1.59576, size = 86, normalized size = 2.26 \begin{align*} \frac{\sqrt{a \cos \left (f x + e\right )^{2}}{\left (\cos \left (f x + e\right )^{2} + 1\right )}}{f \cos \left (f x + e\right )^{2}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a-a*sin(f*x+e)^2)^(1/2)*tan(f*x+e)^3,x, algorithm="fricas")

[Out]

sqrt(a*cos(f*x + e)^2)*(cos(f*x + e)^2 + 1)/(f*cos(f*x + e)^2)

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{- a \left (\sin{\left (e + f x \right )} - 1\right ) \left (\sin{\left (e + f x \right )} + 1\right )} \tan ^{3}{\left (e + f x \right )}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a-a*sin(f*x+e)**2)**(1/2)*tan(f*x+e)**3,x)

[Out]

Integral(sqrt(-a*(sin(e + f*x) - 1)*(sin(e + f*x) + 1))*tan(e + f*x)**3, x)

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Giac [A]  time = 1.50308, size = 53, normalized size = 1.39 \begin{align*} \frac{4 \, \sqrt{a} \mathrm{sgn}\left (\tan \left (\frac{1}{2} \, f x + \frac{1}{2} \, e\right )^{4} - 1\right )}{{\left (\tan \left (\frac{1}{2} \, f x + \frac{1}{2} \, e\right )^{4} - 1\right )} f} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a-a*sin(f*x+e)^2)^(1/2)*tan(f*x+e)^3,x, algorithm="giac")

[Out]

4*sqrt(a)*sgn(tan(1/2*f*x + 1/2*e)^4 - 1)/((tan(1/2*f*x + 1/2*e)^4 - 1)*f)