3.26 \(\int x^2 (a+b \tan (c+d \sqrt{x})) \, dx\)

Optimal. Leaf size=195 \[ \frac{5 i b x^2 \text{PolyLog}\left (2,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{PolyLog}\left (3,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}-\frac{15 i b x \text{PolyLog}\left (4,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^4}+\frac{15 b \sqrt{x} \text{PolyLog}\left (5,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^5}+\frac{15 i b \text{PolyLog}\left (6,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{2 d^6}+\frac{a x^3}{3}-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{1}{3} i b x^3 \]

[Out]

(a*x^3)/3 + (I/3)*b*x^3 - (2*b*x^(5/2)*Log[1 + E^((2*I)*(c + d*Sqrt[x]))])/d + ((5*I)*b*x^2*PolyLog[2, -E^((2*
I)*(c + d*Sqrt[x]))])/d^2 - (10*b*x^(3/2)*PolyLog[3, -E^((2*I)*(c + d*Sqrt[x]))])/d^3 - ((15*I)*b*x*PolyLog[4,
-E^((2*I)*(c + d*Sqrt[x]))])/d^4 + (15*b*Sqrt[x]*PolyLog[5, -E^((2*I)*(c + d*Sqrt[x]))])/d^5 + (((15*I)/2)*b*
PolyLog[6, -E^((2*I)*(c + d*Sqrt[x]))])/d^6

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Rubi [A]  time = 0.275404, antiderivative size = 195, normalized size of antiderivative = 1., number of steps used = 11, number of rules used = 8, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.444, Rules used = {14, 3747, 3719, 2190, 2531, 6609, 2282, 6589} \[ \frac{a x^3}{3}+\frac{5 i b x^2 \text{Li}_2\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{Li}_3\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}-\frac{15 i b x \text{Li}_4\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^4}+\frac{15 b \sqrt{x} \text{Li}_5\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^5}+\frac{15 i b \text{Li}_6\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{2 d^6}-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{1}{3} i b x^3 \]

Antiderivative was successfully verified.

[In]

Int[x^2*(a + b*Tan[c + d*Sqrt[x]]),x]

[Out]

(a*x^3)/3 + (I/3)*b*x^3 - (2*b*x^(5/2)*Log[1 + E^((2*I)*(c + d*Sqrt[x]))])/d + ((5*I)*b*x^2*PolyLog[2, -E^((2*
I)*(c + d*Sqrt[x]))])/d^2 - (10*b*x^(3/2)*PolyLog[3, -E^((2*I)*(c + d*Sqrt[x]))])/d^3 - ((15*I)*b*x*PolyLog[4,
-E^((2*I)*(c + d*Sqrt[x]))])/d^4 + (15*b*Sqrt[x]*PolyLog[5, -E^((2*I)*(c + d*Sqrt[x]))])/d^5 + (((15*I)/2)*b*
PolyLog[6, -E^((2*I)*(c + d*Sqrt[x]))])/d^6

Rule 14

Int[(u_)*((c_.)*(x_))^(m_.), x_Symbol] :> Int[ExpandIntegrand[(c*x)^m*u, x], x] /; FreeQ[{c, m}, x] && SumQ[u]
&&  !LinearQ[u, x] &&  !MatchQ[u, (a_) + (b_.)*(v_) /; FreeQ[{a, b}, x] && InverseFunctionQ[v]]

Rule 3747

Int[(x_)^(m_.)*((a_.) + (b_.)*Tan[(c_.) + (d_.)*(x_)^(n_)])^(p_.), x_Symbol] :> Dist[1/n, Subst[Int[x^(Simplif
y[(m + 1)/n] - 1)*(a + b*Tan[c + d*x])^p, x], x, x^n], x] /; FreeQ[{a, b, c, d, m, n, p}, x] && IGtQ[Simplify[
(m + 1)/n], 0] && IntegerQ[p]

Rule 3719

Int[((c_.) + (d_.)*(x_))^(m_.)*tan[(e_.) + (f_.)*(x_)], x_Symbol] :> Simp[(I*(c + d*x)^(m + 1))/(d*(m + 1)), x
] - Dist[2*I, Int[((c + d*x)^m*E^(2*I*(e + f*x)))/(1 + E^(2*I*(e + f*x))), x], x] /; FreeQ[{c, d, e, f}, x] &&
IGtQ[m, 0]

Rule 2190

Int[(((F_)^((g_.)*((e_.) + (f_.)*(x_))))^(n_.)*((c_.) + (d_.)*(x_))^(m_.))/((a_) + (b_.)*((F_)^((g_.)*((e_.) +
(f_.)*(x_))))^(n_.)), x_Symbol] :> Simp[((c + d*x)^m*Log[1 + (b*(F^(g*(e + f*x)))^n)/a])/(b*f*g*n*Log[F]), x]
- Dist[(d*m)/(b*f*g*n*Log[F]), Int[(c + d*x)^(m - 1)*Log[1 + (b*(F^(g*(e + f*x)))^n)/a], x], x] /; FreeQ[{F,
a, b, c, d, e, f, g, n}, x] && IGtQ[m, 0]

Rule 2531

Int[Log[1 + (e_.)*((F_)^((c_.)*((a_.) + (b_.)*(x_))))^(n_.)]*((f_.) + (g_.)*(x_))^(m_.), x_Symbol] :> -Simp[((
f + g*x)^m*PolyLog[2, -(e*(F^(c*(a + b*x)))^n)])/(b*c*n*Log[F]), x] + Dist[(g*m)/(b*c*n*Log[F]), Int[(f + g*x)
^(m - 1)*PolyLog[2, -(e*(F^(c*(a + b*x)))^n)], x], x] /; FreeQ[{F, a, b, c, e, f, g, n}, x] && GtQ[m, 0]

Rule 6609

Int[((e_.) + (f_.)*(x_))^(m_.)*PolyLog[n_, (d_.)*((F_)^((c_.)*((a_.) + (b_.)*(x_))))^(p_.)], x_Symbol] :> Simp
[((e + f*x)^m*PolyLog[n + 1, d*(F^(c*(a + b*x)))^p])/(b*c*p*Log[F]), x] - Dist[(f*m)/(b*c*p*Log[F]), Int[(e +
f*x)^(m - 1)*PolyLog[n + 1, d*(F^(c*(a + b*x)))^p], x], x] /; FreeQ[{F, a, b, c, d, e, f, n, p}, x] && GtQ[m,
0]

Rule 2282

Int[u_, x_Symbol] :> With[{v = FunctionOfExponential[u, x]}, Dist[v/D[v, x], Subst[Int[FunctionOfExponentialFu
nction[u, x]/x, x], x, v], x]] /; FunctionOfExponentialQ[u, x] &&  !MatchQ[u, (w_)*((a_.)*(v_)^(n_))^(m_) /; F
reeQ[{a, m, n}, x] && IntegerQ[m*n]] &&  !MatchQ[u, E^((c_.)*((a_.) + (b_.)*x))*(F_)[v_] /; FreeQ[{a, b, c}, x
] && InverseFunctionQ[F[x]]]

Rule 6589

Int[PolyLog[n_, (c_.)*((a_.) + (b_.)*(x_))^(p_.)]/((d_.) + (e_.)*(x_)), x_Symbol] :> Simp[PolyLog[n + 1, c*(a
+ b*x)^p]/(e*p), x] /; FreeQ[{a, b, c, d, e, n, p}, x] && EqQ[b*d, a*e]

Rubi steps

\begin{align*} \int x^2 \left (a+b \tan \left (c+d \sqrt{x}\right )\right ) \, dx &=\int \left (a x^2+b x^2 \tan \left (c+d \sqrt{x}\right )\right ) \, dx\\ &=\frac{a x^3}{3}+b \int x^2 \tan \left (c+d \sqrt{x}\right ) \, dx\\ &=\frac{a x^3}{3}+(2 b) \operatorname{Subst}\left (\int x^5 \tan (c+d x) \, dx,x,\sqrt{x}\right )\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-(4 i b) \operatorname{Subst}\left (\int \frac{e^{2 i (c+d x)} x^5}{1+e^{2 i (c+d x)}} \, dx,x,\sqrt{x}\right )\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{(10 b) \operatorname{Subst}\left (\int x^4 \log \left (1+e^{2 i (c+d x)}\right ) \, dx,x,\sqrt{x}\right )}{d}\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{5 i b x^2 \text{Li}_2\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{(20 i b) \operatorname{Subst}\left (\int x^3 \text{Li}_2\left (-e^{2 i (c+d x)}\right ) \, dx,x,\sqrt{x}\right )}{d^2}\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{5 i b x^2 \text{Li}_2\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{Li}_3\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}+\frac{(30 b) \operatorname{Subst}\left (\int x^2 \text{Li}_3\left (-e^{2 i (c+d x)}\right ) \, dx,x,\sqrt{x}\right )}{d^3}\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{5 i b x^2 \text{Li}_2\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{Li}_3\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}-\frac{15 i b x \text{Li}_4\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^4}+\frac{(30 i b) \operatorname{Subst}\left (\int x \text{Li}_4\left (-e^{2 i (c+d x)}\right ) \, dx,x,\sqrt{x}\right )}{d^4}\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{5 i b x^2 \text{Li}_2\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{Li}_3\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}-\frac{15 i b x \text{Li}_4\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^4}+\frac{15 b \sqrt{x} \text{Li}_5\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^5}-\frac{(15 b) \operatorname{Subst}\left (\int \text{Li}_5\left (-e^{2 i (c+d x)}\right ) \, dx,x,\sqrt{x}\right )}{d^5}\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{5 i b x^2 \text{Li}_2\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{Li}_3\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}-\frac{15 i b x \text{Li}_4\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^4}+\frac{15 b \sqrt{x} \text{Li}_5\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^5}+\frac{(15 i b) \operatorname{Subst}\left (\int \frac{\text{Li}_5(-x)}{x} \, dx,x,e^{2 i \left (c+d \sqrt{x}\right )}\right )}{2 d^6}\\ &=\frac{a x^3}{3}+\frac{1}{3} i b x^3-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{5 i b x^2 \text{Li}_2\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{Li}_3\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}-\frac{15 i b x \text{Li}_4\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^4}+\frac{15 b \sqrt{x} \text{Li}_5\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^5}+\frac{15 i b \text{Li}_6\left (-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{2 d^6}\\ \end{align*}

Mathematica [A]  time = 0.0433843, size = 195, normalized size = 1. \[ \frac{5 i b x^2 \text{PolyLog}\left (2,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^2}-\frac{10 b x^{3/2} \text{PolyLog}\left (3,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^3}-\frac{15 i b x \text{PolyLog}\left (4,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^4}+\frac{15 b \sqrt{x} \text{PolyLog}\left (5,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d^5}+\frac{15 i b \text{PolyLog}\left (6,-e^{2 i \left (c+d \sqrt{x}\right )}\right )}{2 d^6}+\frac{a x^3}{3}-\frac{2 b x^{5/2} \log \left (1+e^{2 i \left (c+d \sqrt{x}\right )}\right )}{d}+\frac{1}{3} i b x^3 \]

Antiderivative was successfully verified.

[In]

Integrate[x^2*(a + b*Tan[c + d*Sqrt[x]]),x]

[Out]

(a*x^3)/3 + (I/3)*b*x^3 - (2*b*x^(5/2)*Log[1 + E^((2*I)*(c + d*Sqrt[x]))])/d + ((5*I)*b*x^2*PolyLog[2, -E^((2*
I)*(c + d*Sqrt[x]))])/d^2 - (10*b*x^(3/2)*PolyLog[3, -E^((2*I)*(c + d*Sqrt[x]))])/d^3 - ((15*I)*b*x*PolyLog[4,
-E^((2*I)*(c + d*Sqrt[x]))])/d^4 + (15*b*Sqrt[x]*PolyLog[5, -E^((2*I)*(c + d*Sqrt[x]))])/d^5 + (((15*I)/2)*b*
PolyLog[6, -E^((2*I)*(c + d*Sqrt[x]))])/d^6

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Maple [F]  time = 0.146, size = 0, normalized size = 0. \begin{align*} \int{x}^{2} \left ( a+b\tan \left ( c+d\sqrt{x} \right ) \right ) \, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^2*(a+b*tan(c+d*x^(1/2))),x)

[Out]

int(x^2*(a+b*tan(c+d*x^(1/2))),x)

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Maxima [B]  time = 2.00734, size = 834, normalized size = 4.28 \begin{align*} \text{result too large to display} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*(a+b*tan(c+d*x^(1/2))),x, algorithm="maxima")

[Out]

1/15*(5*(d*sqrt(x) + c)^6*a + 5*I*(d*sqrt(x) + c)^6*b - 30*(d*sqrt(x) + c)^5*a*c - 30*I*(d*sqrt(x) + c)^5*b*c
+ 75*(d*sqrt(x) + c)^4*a*c^2 + 75*I*(d*sqrt(x) + c)^4*b*c^2 - 100*(d*sqrt(x) + c)^3*a*c^3 - 100*I*(d*sqrt(x) +
c)^3*b*c^3 + 75*(d*sqrt(x) + c)^2*a*c^4 + 75*I*(d*sqrt(x) + c)^2*b*c^4 - 30*(d*sqrt(x) + c)*a*c^5 - 30*b*c^5*
log(sec(d*sqrt(x) + c)) - (96*I*(d*sqrt(x) + c)^5*b - 300*I*(d*sqrt(x) + c)^4*b*c + 400*I*(d*sqrt(x) + c)^3*b*
c^2 - 300*I*(d*sqrt(x) + c)^2*b*c^3 + 150*I*(d*sqrt(x) + c)*b*c^4)*arctan2(sin(2*d*sqrt(x) + 2*c), cos(2*d*sqr
t(x) + 2*c) + 1) - (-240*I*(d*sqrt(x) + c)^4*b + 600*I*(d*sqrt(x) + c)^3*b*c - 600*I*(d*sqrt(x) + c)^2*b*c^2 +
300*I*(d*sqrt(x) + c)*b*c^3 - 75*I*b*c^4)*dilog(-e^(2*I*d*sqrt(x) + 2*I*c)) - (48*(d*sqrt(x) + c)^5*b - 150*(
d*sqrt(x) + c)^4*b*c + 200*(d*sqrt(x) + c)^3*b*c^2 - 150*(d*sqrt(x) + c)^2*b*c^3 + 75*(d*sqrt(x) + c)*b*c^4)*l
og(cos(2*d*sqrt(x) + 2*c)^2 + sin(2*d*sqrt(x) + 2*c)^2 + 2*cos(2*d*sqrt(x) + 2*c) + 1) + 360*I*b*polylog(6, -e
^(2*I*d*sqrt(x) + 2*I*c)) + 90*(8*(d*sqrt(x) + c)*b - 5*b*c)*polylog(5, -e^(2*I*d*sqrt(x) + 2*I*c)) - (720*I*(
d*sqrt(x) + c)^2*b - 900*I*(d*sqrt(x) + c)*b*c + 300*I*b*c^2)*polylog(4, -e^(2*I*d*sqrt(x) + 2*I*c)) - 30*(16*
(d*sqrt(x) + c)^3*b - 30*(d*sqrt(x) + c)^2*b*c + 20*(d*sqrt(x) + c)*b*c^2 - 5*b*c^3)*polylog(3, -e^(2*I*d*sqrt
(x) + 2*I*c)))/d^6

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

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*(a+b*tan(c+d*x^(1/2))),x, algorithm="fricas")

[Out]

integral(b*x^2*tan(d*sqrt(x) + c) + a*x^2, x)

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2} \left (a + b \tan{\left (c + d \sqrt{x} \right )}\right )\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**2*(a+b*tan(c+d*x**(1/2))),x)

[Out]

Integral(x**2*(a + b*tan(c + d*sqrt(x))), x)

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

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*(a+b*tan(c+d*x^(1/2))),x, algorithm="giac")

[Out]

integrate((b*tan(d*sqrt(x) + c) + a)*x^2, x)