3.376 \(\int \frac{(b x^2+c x^4)^{3/2}}{x^{21/2}} \, dx\)

Optimal. Leaf size=350 \[ -\frac{4 c^{13/4} x \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{\frac{b+c x^2}{\left (\sqrt{b}+\sqrt{c} x\right )^2}} \text{EllipticF}\left (2 \tan ^{-1}\left (\frac{\sqrt [4]{c} \sqrt{x}}{\sqrt [4]{b}}\right ),\frac{1}{2}\right )}{65 b^{7/4} \sqrt{b x^2+c x^4}}-\frac{8 c^{7/2} x^{3/2} \left (b+c x^2\right )}{65 b^2 \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{b x^2+c x^4}}+\frac{8 c^3 \sqrt{b x^2+c x^4}}{65 b^2 x^{3/2}}+\frac{8 c^{13/4} x \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{\frac{b+c x^2}{\left (\sqrt{b}+\sqrt{c} x\right )^2}} E\left (2 \tan ^{-1}\left (\frac{\sqrt [4]{c} \sqrt{x}}{\sqrt [4]{b}}\right )|\frac{1}{2}\right )}{65 b^{7/4} \sqrt{b x^2+c x^4}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}} \]

[Out]

(-8*c^(7/2)*x^(3/2)*(b + c*x^2))/(65*b^2*(Sqrt[b] + Sqrt[c]*x)*Sqrt[b*x^2 + c*x^4]) - (4*c*Sqrt[b*x^2 + c*x^4]
)/(39*x^(11/2)) - (8*c^2*Sqrt[b*x^2 + c*x^4])/(195*b*x^(7/2)) + (8*c^3*Sqrt[b*x^2 + c*x^4])/(65*b^2*x^(3/2)) -
(2*(b*x^2 + c*x^4)^(3/2))/(13*x^(19/2)) + (8*c^(13/4)*x*(Sqrt[b] + Sqrt[c]*x)*Sqrt[(b + c*x^2)/(Sqrt[b] + Sqr
t[c]*x)^2]*EllipticE[2*ArcTan[(c^(1/4)*Sqrt[x])/b^(1/4)], 1/2])/(65*b^(7/4)*Sqrt[b*x^2 + c*x^4]) - (4*c^(13/4)
*x*(Sqrt[b] + Sqrt[c]*x)*Sqrt[(b + c*x^2)/(Sqrt[b] + Sqrt[c]*x)^2]*EllipticF[2*ArcTan[(c^(1/4)*Sqrt[x])/b^(1/4
)], 1/2])/(65*b^(7/4)*Sqrt[b*x^2 + c*x^4])

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Rubi [A]  time = 0.426244, antiderivative size = 350, normalized size of antiderivative = 1., number of steps used = 9, number of rules used = 7, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.333, Rules used = {2020, 2025, 2032, 329, 305, 220, 1196} \[ -\frac{8 c^{7/2} x^{3/2} \left (b+c x^2\right )}{65 b^2 \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{b x^2+c x^4}}+\frac{8 c^3 \sqrt{b x^2+c x^4}}{65 b^2 x^{3/2}}-\frac{4 c^{13/4} x \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{\frac{b+c x^2}{\left (\sqrt{b}+\sqrt{c} x\right )^2}} F\left (2 \tan ^{-1}\left (\frac{\sqrt [4]{c} \sqrt{x}}{\sqrt [4]{b}}\right )|\frac{1}{2}\right )}{65 b^{7/4} \sqrt{b x^2+c x^4}}+\frac{8 c^{13/4} x \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{\frac{b+c x^2}{\left (\sqrt{b}+\sqrt{c} x\right )^2}} E\left (2 \tan ^{-1}\left (\frac{\sqrt [4]{c} \sqrt{x}}{\sqrt [4]{b}}\right )|\frac{1}{2}\right )}{65 b^{7/4} \sqrt{b x^2+c x^4}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}} \]

Antiderivative was successfully verified.

[In]

Int[(b*x^2 + c*x^4)^(3/2)/x^(21/2),x]

[Out]

(-8*c^(7/2)*x^(3/2)*(b + c*x^2))/(65*b^2*(Sqrt[b] + Sqrt[c]*x)*Sqrt[b*x^2 + c*x^4]) - (4*c*Sqrt[b*x^2 + c*x^4]
)/(39*x^(11/2)) - (8*c^2*Sqrt[b*x^2 + c*x^4])/(195*b*x^(7/2)) + (8*c^3*Sqrt[b*x^2 + c*x^4])/(65*b^2*x^(3/2)) -
(2*(b*x^2 + c*x^4)^(3/2))/(13*x^(19/2)) + (8*c^(13/4)*x*(Sqrt[b] + Sqrt[c]*x)*Sqrt[(b + c*x^2)/(Sqrt[b] + Sqr
t[c]*x)^2]*EllipticE[2*ArcTan[(c^(1/4)*Sqrt[x])/b^(1/4)], 1/2])/(65*b^(7/4)*Sqrt[b*x^2 + c*x^4]) - (4*c^(13/4)
*x*(Sqrt[b] + Sqrt[c]*x)*Sqrt[(b + c*x^2)/(Sqrt[b] + Sqrt[c]*x)^2]*EllipticF[2*ArcTan[(c^(1/4)*Sqrt[x])/b^(1/4
)], 1/2])/(65*b^(7/4)*Sqrt[b*x^2 + c*x^4])

Rule 2020

Int[((c_.)*(x_))^(m_)*((a_.)*(x_)^(j_.) + (b_.)*(x_)^(n_.))^(p_), x_Symbol] :> Simp[((c*x)^(m + 1)*(a*x^j + b*
x^n)^p)/(c*(m + j*p + 1)), x] - Dist[(b*p*(n - j))/(c^n*(m + j*p + 1)), Int[(c*x)^(m + n)*(a*x^j + b*x^n)^(p -
1), x], x] /; FreeQ[{a, b, c}, x] &&  !IntegerQ[p] && LtQ[0, j, n] && (IntegersQ[j, n] || GtQ[c, 0]) && GtQ[p
, 0] && LtQ[m + j*p + 1, 0]

Rule 2025

Int[((c_.)*(x_))^(m_.)*((a_.)*(x_)^(j_.) + (b_.)*(x_)^(n_.))^(p_), x_Symbol] :> Simp[(c^(j - 1)*(c*x)^(m - j +
1)*(a*x^j + b*x^n)^(p + 1))/(a*(m + j*p + 1)), x] - Dist[(b*(m + n*p + n - j + 1))/(a*c^(n - j)*(m + j*p + 1)
), Int[(c*x)^(m + n - j)*(a*x^j + b*x^n)^p, x], x] /; FreeQ[{a, b, c, m, p}, x] &&  !IntegerQ[p] && LtQ[0, j,
n] && (IntegersQ[j, n] || GtQ[c, 0]) && LtQ[m + j*p + 1, 0]

Rule 2032

Int[((c_.)*(x_))^(m_.)*((a_.)*(x_)^(j_.) + (b_.)*(x_)^(n_.))^(p_), x_Symbol] :> Dist[(c^IntPart[m]*(c*x)^FracP
art[m]*(a*x^j + b*x^n)^FracPart[p])/(x^(FracPart[m] + j*FracPart[p])*(a + b*x^(n - j))^FracPart[p]), Int[x^(m
+ j*p)*(a + b*x^(n - j))^p, x], x] /; FreeQ[{a, b, c, j, m, n, p}, x] &&  !IntegerQ[p] && NeQ[n, j] && PosQ[n
- j]

Rule 329

Int[((c_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> With[{k = Denominator[m]}, Dist[k/c, Subst[I
nt[x^(k*(m + 1) - 1)*(a + (b*x^(k*n))/c^n)^p, x], x, (c*x)^(1/k)], x]] /; FreeQ[{a, b, c, p}, x] && IGtQ[n, 0]
&& FractionQ[m] && IntBinomialQ[a, b, c, n, m, p, x]

Rule 305

Int[(x_)^2/Sqrt[(a_) + (b_.)*(x_)^4], x_Symbol] :> With[{q = Rt[b/a, 2]}, Dist[1/q, Int[1/Sqrt[a + b*x^4], x],
x] - Dist[1/q, Int[(1 - q*x^2)/Sqrt[a + b*x^4], x], x]] /; FreeQ[{a, b}, x] && PosQ[b/a]

Rule 220

Int[1/Sqrt[(a_) + (b_.)*(x_)^4], x_Symbol] :> With[{q = Rt[b/a, 4]}, Simp[((1 + q^2*x^2)*Sqrt[(a + b*x^4)/(a*(
1 + q^2*x^2)^2)]*EllipticF[2*ArcTan[q*x], 1/2])/(2*q*Sqrt[a + b*x^4]), x]] /; FreeQ[{a, b}, x] && PosQ[b/a]

Rule 1196

Int[((d_) + (e_.)*(x_)^2)/Sqrt[(a_) + (c_.)*(x_)^4], x_Symbol] :> With[{q = Rt[c/a, 4]}, -Simp[(d*x*Sqrt[a + c
*x^4])/(a*(1 + q^2*x^2)), x] + Simp[(d*(1 + q^2*x^2)*Sqrt[(a + c*x^4)/(a*(1 + q^2*x^2)^2)]*EllipticE[2*ArcTan[
q*x], 1/2])/(q*Sqrt[a + c*x^4]), x] /; EqQ[e + d*q^2, 0]] /; FreeQ[{a, c, d, e}, x] && PosQ[c/a]

Rubi steps

\begin{align*} \int \frac{\left (b x^2+c x^4\right )^{3/2}}{x^{21/2}} \, dx &=-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}+\frac{1}{13} (6 c) \int \frac{\sqrt{b x^2+c x^4}}{x^{13/2}} \, dx\\ &=-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}+\frac{1}{39} \left (4 c^2\right ) \int \frac{1}{x^{5/2} \sqrt{b x^2+c x^4}} \, dx\\ &=-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}-\frac{\left (4 c^3\right ) \int \frac{1}{\sqrt{x} \sqrt{b x^2+c x^4}} \, dx}{65 b}\\ &=-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}+\frac{8 c^3 \sqrt{b x^2+c x^4}}{65 b^2 x^{3/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}-\frac{\left (4 c^4\right ) \int \frac{x^{3/2}}{\sqrt{b x^2+c x^4}} \, dx}{65 b^2}\\ &=-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}+\frac{8 c^3 \sqrt{b x^2+c x^4}}{65 b^2 x^{3/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}-\frac{\left (4 c^4 x \sqrt{b+c x^2}\right ) \int \frac{\sqrt{x}}{\sqrt{b+c x^2}} \, dx}{65 b^2 \sqrt{b x^2+c x^4}}\\ &=-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}+\frac{8 c^3 \sqrt{b x^2+c x^4}}{65 b^2 x^{3/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}-\frac{\left (8 c^4 x \sqrt{b+c x^2}\right ) \operatorname{Subst}\left (\int \frac{x^2}{\sqrt{b+c x^4}} \, dx,x,\sqrt{x}\right )}{65 b^2 \sqrt{b x^2+c x^4}}\\ &=-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}+\frac{8 c^3 \sqrt{b x^2+c x^4}}{65 b^2 x^{3/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}-\frac{\left (8 c^{7/2} x \sqrt{b+c x^2}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt{b+c x^4}} \, dx,x,\sqrt{x}\right )}{65 b^{3/2} \sqrt{b x^2+c x^4}}+\frac{\left (8 c^{7/2} x \sqrt{b+c x^2}\right ) \operatorname{Subst}\left (\int \frac{1-\frac{\sqrt{c} x^2}{\sqrt{b}}}{\sqrt{b+c x^4}} \, dx,x,\sqrt{x}\right )}{65 b^{3/2} \sqrt{b x^2+c x^4}}\\ &=-\frac{8 c^{7/2} x^{3/2} \left (b+c x^2\right )}{65 b^2 \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{b x^2+c x^4}}-\frac{4 c \sqrt{b x^2+c x^4}}{39 x^{11/2}}-\frac{8 c^2 \sqrt{b x^2+c x^4}}{195 b x^{7/2}}+\frac{8 c^3 \sqrt{b x^2+c x^4}}{65 b^2 x^{3/2}}-\frac{2 \left (b x^2+c x^4\right )^{3/2}}{13 x^{19/2}}+\frac{8 c^{13/4} x \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{\frac{b+c x^2}{\left (\sqrt{b}+\sqrt{c} x\right )^2}} E\left (2 \tan ^{-1}\left (\frac{\sqrt [4]{c} \sqrt{x}}{\sqrt [4]{b}}\right )|\frac{1}{2}\right )}{65 b^{7/4} \sqrt{b x^2+c x^4}}-\frac{4 c^{13/4} x \left (\sqrt{b}+\sqrt{c} x\right ) \sqrt{\frac{b+c x^2}{\left (\sqrt{b}+\sqrt{c} x\right )^2}} F\left (2 \tan ^{-1}\left (\frac{\sqrt [4]{c} \sqrt{x}}{\sqrt [4]{b}}\right )|\frac{1}{2}\right )}{65 b^{7/4} \sqrt{b x^2+c x^4}}\\ \end{align*}

Mathematica [C]  time = 0.0187429, size = 58, normalized size = 0.17 \[ -\frac{2 b \sqrt{x^2 \left (b+c x^2\right )} \, _2F_1\left (-\frac{13}{4},-\frac{3}{2};-\frac{9}{4};-\frac{c x^2}{b}\right )}{13 x^{15/2} \sqrt{\frac{c x^2}{b}+1}} \]

Antiderivative was successfully verified.

[In]

Integrate[(b*x^2 + c*x^4)^(3/2)/x^(21/2),x]

[Out]

(-2*b*Sqrt[x^2*(b + c*x^2)]*Hypergeometric2F1[-13/4, -3/2, -9/4, -((c*x^2)/b)])/(13*x^(15/2)*Sqrt[1 + (c*x^2)/
b])

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Maple [A]  time = 0.204, size = 250, normalized size = 0.7 \begin{align*} -{\frac{2}{195\, \left ( c{x}^{2}+b \right ) ^{2}{b}^{2}} \left ( c{x}^{4}+b{x}^{2} \right ) ^{{\frac{3}{2}}} \left ( 12\,\sqrt{{\frac{cx+\sqrt{-bc}}{\sqrt{-bc}}}}\sqrt{2}\sqrt{{\frac{-cx+\sqrt{-bc}}{\sqrt{-bc}}}}\sqrt{-{\frac{cx}{\sqrt{-bc}}}}{\it EllipticE} \left ( \sqrt{{\frac{cx+\sqrt{-bc}}{\sqrt{-bc}}}},1/2\,\sqrt{2} \right ){x}^{6}b{c}^{3}-6\,\sqrt{{\frac{cx+\sqrt{-bc}}{\sqrt{-bc}}}}\sqrt{2}\sqrt{{\frac{-cx+\sqrt{-bc}}{\sqrt{-bc}}}}\sqrt{-{\frac{cx}{\sqrt{-bc}}}}{\it EllipticF} \left ( \sqrt{{\frac{cx+\sqrt{-bc}}{\sqrt{-bc}}}},1/2\,\sqrt{2} \right ){x}^{6}b{c}^{3}-12\,{x}^{8}{c}^{4}-8\,{x}^{6}b{c}^{3}+29\,{x}^{4}{b}^{2}{c}^{2}+40\,{x}^{2}{b}^{3}c+15\,{b}^{4} \right ){x}^{-{\frac{19}{2}}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((c*x^4+b*x^2)^(3/2)/x^(21/2),x)

[Out]

-2/195*(c*x^4+b*x^2)^(3/2)/x^(19/2)/(c*x^2+b)^2*(12*((c*x+(-b*c)^(1/2))/(-b*c)^(1/2))^(1/2)*2^(1/2)*((-c*x+(-b
*c)^(1/2))/(-b*c)^(1/2))^(1/2)*(-x*c/(-b*c)^(1/2))^(1/2)*EllipticE(((c*x+(-b*c)^(1/2))/(-b*c)^(1/2))^(1/2),1/2
*2^(1/2))*x^6*b*c^3-6*((c*x+(-b*c)^(1/2))/(-b*c)^(1/2))^(1/2)*2^(1/2)*((-c*x+(-b*c)^(1/2))/(-b*c)^(1/2))^(1/2)
*(-x*c/(-b*c)^(1/2))^(1/2)*EllipticF(((c*x+(-b*c)^(1/2))/(-b*c)^(1/2))^(1/2),1/2*2^(1/2))*x^6*b*c^3-12*x^8*c^4
-8*x^6*b*c^3+29*x^4*b^2*c^2+40*x^2*b^3*c+15*b^4)/b^2

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (c x^{4} + b x^{2}\right )}^{\frac{3}{2}}}{x^{\frac{21}{2}}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((c*x^4+b*x^2)^(3/2)/x^(21/2),x, algorithm="maxima")

[Out]

integrate((c*x^4 + b*x^2)^(3/2)/x^(21/2), x)

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Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{\sqrt{c x^{4} + b x^{2}}{\left (c x^{2} + b\right )}}{x^{\frac{17}{2}}}, x\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((c*x^4+b*x^2)^(3/2)/x^(21/2),x, algorithm="fricas")

[Out]

integral(sqrt(c*x^4 + b*x^2)*(c*x^2 + b)/x^(17/2), 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((c*x**4+b*x**2)**(3/2)/x**(21/2),x)

[Out]

Timed out

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (c x^{4} + b x^{2}\right )}^{\frac{3}{2}}}{x^{\frac{21}{2}}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((c*x^4+b*x^2)^(3/2)/x^(21/2),x, algorithm="giac")

[Out]

integrate((c*x^4 + b*x^2)^(3/2)/x^(21/2), x)