3.88 \(\int \frac{\sin ^2(a+b x)}{\sin ^{\frac{7}{2}}(2 a+2 b x)} \, dx\)

Optimal. Leaf size=77 \[ \frac{\sin ^2(a+b x)}{5 b \sin ^{\frac{5}{2}}(2 a+2 b x)}-\frac{3 E\left (\left .a+b x-\frac{\pi }{4}\right |2\right )}{10 b}-\frac{3 \cos (2 a+2 b x)}{10 b \sqrt{\sin (2 a+2 b x)}} \]

[Out]

(-3*EllipticE[a - Pi/4 + b*x, 2])/(10*b) + Sin[a + b*x]^2/(5*b*Sin[2*a + 2*b*x]^(5/2)) - (3*Cos[2*a + 2*b*x])/
(10*b*Sqrt[Sin[2*a + 2*b*x]])

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Rubi [A]  time = 0.0464883, antiderivative size = 77, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 22, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.136, Rules used = {4296, 2636, 2639} \[ \frac{\sin ^2(a+b x)}{5 b \sin ^{\frac{5}{2}}(2 a+2 b x)}-\frac{3 E\left (\left .a+b x-\frac{\pi }{4}\right |2\right )}{10 b}-\frac{3 \cos (2 a+2 b x)}{10 b \sqrt{\sin (2 a+2 b x)}} \]

Antiderivative was successfully verified.

[In]

Int[Sin[a + b*x]^2/Sin[2*a + 2*b*x]^(7/2),x]

[Out]

(-3*EllipticE[a - Pi/4 + b*x, 2])/(10*b) + Sin[a + b*x]^2/(5*b*Sin[2*a + 2*b*x]^(5/2)) - (3*Cos[2*a + 2*b*x])/
(10*b*Sqrt[Sin[2*a + 2*b*x]])

Rule 4296

Int[((e_.)*sin[(a_.) + (b_.)*(x_)])^(m_)*((g_.)*sin[(c_.) + (d_.)*(x_)])^(p_), x_Symbol] :> -Simp[((e*Sin[a +
b*x])^m*(g*Sin[c + d*x])^(p + 1))/(2*b*g*(p + 1)), x] + Dist[(e^2*(m + 2*p + 2))/(4*g^2*(p + 1)), Int[(e*Sin[a
+ b*x])^(m - 2)*(g*Sin[c + d*x])^(p + 2), x], x] /; FreeQ[{a, b, c, d, e, g}, x] && EqQ[b*c - a*d, 0] && EqQ[
d/b, 2] &&  !IntegerQ[p] && GtQ[m, 1] && LtQ[p, -1] && NeQ[m + 2*p + 2, 0] && (LtQ[p, -2] || EqQ[m, 2]) && Int
egersQ[2*m, 2*p]

Rule 2636

Int[((b_.)*sin[(c_.) + (d_.)*(x_)])^(n_), x_Symbol] :> Simp[(Cos[c + d*x]*(b*Sin[c + d*x])^(n + 1))/(b*d*(n +
1)), x] + Dist[(n + 2)/(b^2*(n + 1)), Int[(b*Sin[c + d*x])^(n + 2), x], x] /; FreeQ[{b, c, d}, x] && LtQ[n, -1
] && IntegerQ[2*n]

Rule 2639

Int[Sqrt[sin[(c_.) + (d_.)*(x_)]], x_Symbol] :> Simp[(2*EllipticE[(1*(c - Pi/2 + d*x))/2, 2])/d, x] /; FreeQ[{
c, d}, x]

Rubi steps

\begin{align*} \int \frac{\sin ^2(a+b x)}{\sin ^{\frac{7}{2}}(2 a+2 b x)} \, dx &=\frac{\sin ^2(a+b x)}{5 b \sin ^{\frac{5}{2}}(2 a+2 b x)}+\frac{3}{10} \int \frac{1}{\sin ^{\frac{3}{2}}(2 a+2 b x)} \, dx\\ &=\frac{\sin ^2(a+b x)}{5 b \sin ^{\frac{5}{2}}(2 a+2 b x)}-\frac{3 \cos (2 a+2 b x)}{10 b \sqrt{\sin (2 a+2 b x)}}-\frac{3}{10} \int \sqrt{\sin (2 a+2 b x)} \, dx\\ &=-\frac{3 E\left (\left .a-\frac{\pi }{4}+b x\right |2\right )}{10 b}+\frac{\sin ^2(a+b x)}{5 b \sin ^{\frac{5}{2}}(2 a+2 b x)}-\frac{3 \cos (2 a+2 b x)}{10 b \sqrt{\sin (2 a+2 b x)}}\\ \end{align*}

Mathematica [A]  time = 0.815191, size = 66, normalized size = 0.86 \[ -\frac{12 E\left (\left .a+b x-\frac{\pi }{4}\right |2\right )+\frac{4 \sin ^2(a+b x) (6 \cos (2 (a+b x))+3 \cos (4 (a+b x))+1)}{\sin ^{\frac{5}{2}}(2 (a+b x))}}{40 b} \]

Antiderivative was successfully verified.

[In]

Integrate[Sin[a + b*x]^2/Sin[2*a + 2*b*x]^(7/2),x]

[Out]

-(12*EllipticE[a - Pi/4 + b*x, 2] + (4*(1 + 6*Cos[2*(a + b*x)] + 3*Cos[4*(a + b*x)])*Sin[a + b*x]^2)/Sin[2*(a
+ b*x)]^(5/2))/(40*b)

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Maple [B]  time = 58.739, size = 227, normalized size = 3. \begin{align*}{\frac{\sqrt{2}}{32\,b} \left ({\frac{8\,\sqrt{2}}{5} \left ( \sin \left ( 2\,bx+2\,a \right ) \right ) ^{-{\frac{5}{2}}}}+{\frac{4\,\sqrt{2}}{5\,\cos \left ( 2\,bx+2\,a \right ) } \left ( 6\,\sqrt{\sin \left ( 2\,bx+2\,a \right ) +1}\sqrt{-2\,\sin \left ( 2\,bx+2\,a \right ) +2}\sqrt{-\sin \left ( 2\,bx+2\,a \right ) } \left ( \sin \left ( 2\,bx+2\,a \right ) \right ) ^{2}{\it EllipticE} \left ( \sqrt{\sin \left ( 2\,bx+2\,a \right ) +1},1/2\,\sqrt{2} \right ) -3\,\sqrt{\sin \left ( 2\,bx+2\,a \right ) +1}\sqrt{-2\,\sin \left ( 2\,bx+2\,a \right ) +2}\sqrt{-\sin \left ( 2\,bx+2\,a \right ) } \left ( \sin \left ( 2\,bx+2\,a \right ) \right ) ^{2}{\it EllipticF} \left ( \sqrt{\sin \left ( 2\,bx+2\,a \right ) +1},1/2\,\sqrt{2} \right ) +6\, \left ( \sin \left ( 2\,bx+2\,a \right ) \right ) ^{4}-4\, \left ( \sin \left ( 2\,bx+2\,a \right ) \right ) ^{2}-2 \right ) \left ( \sin \left ( 2\,bx+2\,a \right ) \right ) ^{-{\frac{5}{2}}}} \right ) } \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(sin(b*x+a)^2/sin(2*b*x+2*a)^(7/2),x)

[Out]

1/32*2^(1/2)*(8/5*2^(1/2)/sin(2*b*x+2*a)^(5/2)+4/5*2^(1/2)/sin(2*b*x+2*a)^(5/2)*(6*(sin(2*b*x+2*a)+1)^(1/2)*(-
2*sin(2*b*x+2*a)+2)^(1/2)*(-sin(2*b*x+2*a))^(1/2)*sin(2*b*x+2*a)^2*EllipticE((sin(2*b*x+2*a)+1)^(1/2),1/2*2^(1
/2))-3*(sin(2*b*x+2*a)+1)^(1/2)*(-2*sin(2*b*x+2*a)+2)^(1/2)*(-sin(2*b*x+2*a))^(1/2)*sin(2*b*x+2*a)^2*EllipticF
((sin(2*b*x+2*a)+1)^(1/2),1/2*2^(1/2))+6*sin(2*b*x+2*a)^4-4*sin(2*b*x+2*a)^2-2)/cos(2*b*x+2*a))/b

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\sin \left (b x + a\right )^{2}}{\sin \left (2 \, b x + 2 \, a\right )^{\frac{7}{2}}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sin(b*x+a)^2/sin(2*b*x+2*a)^(7/2),x, algorithm="maxima")

[Out]

integrate(sin(b*x + a)^2/sin(2*b*x + 2*a)^(7/2), x)

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Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (-\frac{{\left (\cos \left (b x + a\right )^{2} - 1\right )} \sqrt{\sin \left (2 \, b x + 2 \, a\right )}}{\cos \left (2 \, b x + 2 \, a\right )^{4} - 2 \, \cos \left (2 \, b x + 2 \, a\right )^{2} + 1}, x\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sin(b*x+a)^2/sin(2*b*x+2*a)^(7/2),x, algorithm="fricas")

[Out]

integral(-(cos(b*x + a)^2 - 1)*sqrt(sin(2*b*x + 2*a))/(cos(2*b*x + 2*a)^4 - 2*cos(2*b*x + 2*a)^2 + 1), x)

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Sympy [F(-1)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sin(b*x+a)**2/sin(2*b*x+2*a)**(7/2),x)

[Out]

Timed out

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Giac [F(-1)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sin(b*x+a)^2/sin(2*b*x+2*a)^(7/2),x, algorithm="giac")

[Out]

Timed out