Integrand size = 18, antiderivative size = 293 \[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=-\frac {4 x^2 \text {arctanh}\left (e^{\frac {1}{4} i (2 c+\pi +2 d x)}\right ) \sin \left (\frac {c}{2}+\frac {\pi }{4}+\frac {d x}{2}\right )}{d \sqrt {a+a \sin (c+d x)}}+\frac {8 i x \operatorname {PolyLog}\left (2,-e^{\frac {1}{4} i (2 c+\pi +2 d x)}\right ) \sin \left (\frac {c}{2}+\frac {\pi }{4}+\frac {d x}{2}\right )}{d^2 \sqrt {a+a \sin (c+d x)}}-\frac {8 i x \operatorname {PolyLog}\left (2,e^{\frac {1}{4} i (2 c+\pi +2 d x)}\right ) \sin \left (\frac {c}{2}+\frac {\pi }{4}+\frac {d x}{2}\right )}{d^2 \sqrt {a+a \sin (c+d x)}}-\frac {16 \operatorname {PolyLog}\left (3,-e^{\frac {1}{4} i (2 c+\pi +2 d x)}\right ) \sin \left (\frac {c}{2}+\frac {\pi }{4}+\frac {d x}{2}\right )}{d^3 \sqrt {a+a \sin (c+d x)}}+\frac {16 \operatorname {PolyLog}\left (3,e^{\frac {1}{4} i (2 c+\pi +2 d x)}\right ) \sin \left (\frac {c}{2}+\frac {\pi }{4}+\frac {d x}{2}\right )}{d^3 \sqrt {a+a \sin (c+d x)}} \] Output:
-4*x^2*arctanh(exp(1/4*I*(2*d*x+Pi+2*c)))*sin(1/2*c+1/4*Pi+1/2*d*x)/d/(a+a *sin(d*x+c))^(1/2)+8*I*x*polylog(2,-exp(1/4*I*(2*d*x+Pi+2*c)))*sin(1/2*c+1 /4*Pi+1/2*d*x)/d^2/(a+a*sin(d*x+c))^(1/2)-8*I*x*polylog(2,exp(1/4*I*(2*d*x +Pi+2*c)))*sin(1/2*c+1/4*Pi+1/2*d*x)/d^2/(a+a*sin(d*x+c))^(1/2)-16*polylog (3,-exp(1/4*I*(2*d*x+Pi+2*c)))*sin(1/2*c+1/4*Pi+1/2*d*x)/d^3/(a+a*sin(d*x+ c))^(1/2)+16*polylog(3,exp(1/4*I*(2*d*x+Pi+2*c)))*sin(1/2*c+1/4*Pi+1/2*d*x )/d^3/(a+a*sin(d*x+c))^(1/2)
Time = 0.96 (sec) , antiderivative size = 245, normalized size of antiderivative = 0.84 \[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=\frac {\sqrt [4]{-1} \sqrt {2} e^{-\frac {1}{2} i (c+d x)} \left (i+e^{i (c+d x)}\right ) \left (4 d x \operatorname {PolyLog}\left (2,-\sqrt [4]{-1} e^{\frac {1}{2} i (c+d x)}\right )-i \left (d^2 x^2 \log \left (1-\sqrt [4]{-1} e^{\frac {1}{2} i (c+d x)}\right )-d^2 x^2 \log \left (1+\sqrt [4]{-1} e^{\frac {1}{2} i (c+d x)}\right )-4 i d x \operatorname {PolyLog}\left (2,\sqrt [4]{-1} e^{\frac {1}{2} i (c+d x)}\right )-8 \operatorname {PolyLog}\left (3,-\sqrt [4]{-1} e^{\frac {1}{2} i (c+d x)}\right )+8 \operatorname {PolyLog}\left (3,\sqrt [4]{-1} e^{\frac {1}{2} i (c+d x)}\right )\right )\right )}{d^3 \sqrt {-i a e^{-i (c+d x)} \left (i+e^{i (c+d x)}\right )^2}} \] Input:
Integrate[x^2/Sqrt[a + a*Sin[c + d*x]],x]
Output:
((-1)^(1/4)*Sqrt[2]*(I + E^(I*(c + d*x)))*(4*d*x*PolyLog[2, -((-1)^(1/4)*E ^((I/2)*(c + d*x)))] - I*(d^2*x^2*Log[1 - (-1)^(1/4)*E^((I/2)*(c + d*x))] - d^2*x^2*Log[1 + (-1)^(1/4)*E^((I/2)*(c + d*x))] - (4*I)*d*x*PolyLog[2, ( -1)^(1/4)*E^((I/2)*(c + d*x))] - 8*PolyLog[3, -((-1)^(1/4)*E^((I/2)*(c + d *x)))] + 8*PolyLog[3, (-1)^(1/4)*E^((I/2)*(c + d*x))])))/(d^3*E^((I/2)*(c + d*x))*Sqrt[((-I)*a*(I + E^(I*(c + d*x)))^2)/E^(I*(c + d*x))])
Time = 0.65 (sec) , antiderivative size = 178, normalized size of antiderivative = 0.61, number of steps used = 8, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.389, Rules used = {3042, 3800, 3042, 4671, 3011, 2720, 7143}
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
\(\displaystyle \int \frac {x^2}{\sqrt {a \sin (c+d x)+a}} \, dx\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \int \frac {x^2}{\sqrt {a \sin (c+d x)+a}}dx\) |
\(\Big \downarrow \) 3800 |
\(\displaystyle \frac {\sin \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right ) \int x^2 \csc \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right )dx}{\sqrt {a \sin (c+d x)+a}}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {\sin \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right ) \int x^2 \csc \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right )dx}{\sqrt {a \sin (c+d x)+a}}\) |
\(\Big \downarrow \) 4671 |
\(\displaystyle \frac {\sin \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right ) \left (-\frac {4 \int x \log \left (1-e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )dx}{d}+\frac {4 \int x \log \left (1+e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )dx}{d}-\frac {4 x^2 \text {arctanh}\left (e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}\right )}{\sqrt {a \sin (c+d x)+a}}\) |
\(\Big \downarrow \) 3011 |
\(\displaystyle \frac {\sin \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right ) \left (\frac {4 \left (\frac {2 i x \operatorname {PolyLog}\left (2,-e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}-\frac {2 i \int \operatorname {PolyLog}\left (2,-e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )dx}{d}\right )}{d}-\frac {4 \left (\frac {2 i x \operatorname {PolyLog}\left (2,e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}-\frac {2 i \int \operatorname {PolyLog}\left (2,e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )dx}{d}\right )}{d}-\frac {4 x^2 \text {arctanh}\left (e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}\right )}{\sqrt {a \sin (c+d x)+a}}\) |
\(\Big \downarrow \) 2720 |
\(\displaystyle \frac {\sin \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right ) \left (\frac {4 \left (\frac {2 i x \operatorname {PolyLog}\left (2,-e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}-\frac {4 \int e^{-\frac {1}{4} i (2 c+2 d x+\pi )} \operatorname {PolyLog}\left (2,-e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )de^{\frac {1}{4} i (2 c+2 d x+\pi )}}{d^2}\right )}{d}-\frac {4 \left (\frac {2 i x \operatorname {PolyLog}\left (2,e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}-\frac {4 \int e^{-\frac {1}{4} i (2 c+2 d x+\pi )} \operatorname {PolyLog}\left (2,e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )de^{\frac {1}{4} i (2 c+2 d x+\pi )}}{d^2}\right )}{d}-\frac {4 x^2 \text {arctanh}\left (e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}\right )}{\sqrt {a \sin (c+d x)+a}}\) |
\(\Big \downarrow \) 7143 |
\(\displaystyle \frac {\sin \left (\frac {c}{2}+\frac {d x}{2}+\frac {\pi }{4}\right ) \left (-\frac {4 x^2 \text {arctanh}\left (e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}+\frac {4 \left (\frac {2 i x \operatorname {PolyLog}\left (2,-e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}-\frac {4 \operatorname {PolyLog}\left (3,-e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d^2}\right )}{d}-\frac {4 \left (\frac {2 i x \operatorname {PolyLog}\left (2,e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d}-\frac {4 \operatorname {PolyLog}\left (3,e^{\frac {1}{4} i (2 c+2 d x+\pi )}\right )}{d^2}\right )}{d}\right )}{\sqrt {a \sin (c+d x)+a}}\) |
Input:
Int[x^2/Sqrt[a + a*Sin[c + d*x]],x]
Output:
(((-4*x^2*ArcTanh[E^((I/4)*(2*c + Pi + 2*d*x))])/d + (4*(((2*I)*x*PolyLog[ 2, -E^((I/4)*(2*c + Pi + 2*d*x))])/d - (4*PolyLog[3, -E^((I/4)*(2*c + Pi + 2*d*x))])/d^2))/d - (4*(((2*I)*x*PolyLog[2, E^((I/4)*(2*c + Pi + 2*d*x))] )/d - (4*PolyLog[3, E^((I/4)*(2*c + Pi + 2*d*x))])/d^2))/d)*Sin[c/2 + Pi/4 + (d*x)/2])/Sqrt[a + a*Sin[c + d*x]]
Int[u_, x_Symbol] :> With[{v = FunctionOfExponential[u, x]}, Simp[v/D[v, x] Subst[Int[FunctionOfExponentialFunction[u, x]/x, x], x, v], x]] /; Funct ionOfExponentialQ[u, x] && !MatchQ[u, (w_)*((a_.)*(v_)^(n_))^(m_) /; FreeQ [{a, m, n}, x] && IntegerQ[m*n]] && !MatchQ[u, E^((c_.)*((a_.) + (b_.)*x)) *(F_)[v_] /; FreeQ[{a, b, c}, x] && InverseFunctionQ[F[x]]]
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] + Simp[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]
Int[((c_.) + (d_.)*(x_))^(m_.)*((a_) + (b_.)*sin[(e_.) + (f_.)*(x_)])^(n_), x_Symbol] :> Simp[(2*a)^IntPart[n]*((a + b*Sin[e + f*x])^FracPart[n]/Sin[e /2 + a*(Pi/(4*b)) + f*(x/2)]^(2*FracPart[n])) Int[(c + d*x)^m*Sin[e/2 + a *(Pi/(4*b)) + f*(x/2)]^(2*n), x], x] /; FreeQ[{a, b, c, d, e, f, m}, x] && EqQ[a^2 - b^2, 0] && IntegerQ[n + 1/2] && (GtQ[n, 0] || IGtQ[m, 0])
Int[csc[(e_.) + (f_.)*(x_)]*((c_.) + (d_.)*(x_))^(m_.), x_Symbol] :> Simp[- 2*(c + d*x)^m*(ArcTanh[E^(I*(e + f*x))]/f), x] + (-Simp[d*(m/f) Int[(c + d*x)^(m - 1)*Log[1 - E^(I*(e + f*x))], x], x] + Simp[d*(m/f) Int[(c + d*x )^(m - 1)*Log[1 + E^(I*(e + f*x))], x], x]) /; FreeQ[{c, d, e, f}, x] && IG tQ[m, 0]
Int[PolyLog[n_, (c_.)*((a_.) + (b_.)*(x_))^(p_.)]/((d_.) + (e_.)*(x_)), x_S ymbol] :> 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]
\[\int \frac {x^{2}}{\sqrt {a +a \sin \left (d x +c \right )}}d x\]
Input:
int(x^2/(a+a*sin(d*x+c))^(1/2),x)
Output:
int(x^2/(a+a*sin(d*x+c))^(1/2),x)
\[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=\int { \frac {x^{2}}{\sqrt {a \sin \left (d x + c\right ) + a}} \,d x } \] Input:
integrate(x^2/(a+a*sin(d*x+c))^(1/2),x, algorithm="fricas")
Output:
integral(x^2/sqrt(a*sin(d*x + c) + a), x)
\[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=\int \frac {x^{2}}{\sqrt {a \left (\sin {\left (c + d x \right )} + 1\right )}}\, dx \] Input:
integrate(x**2/(a+a*sin(d*x+c))**(1/2),x)
Output:
Integral(x**2/sqrt(a*(sin(c + d*x) + 1)), x)
\[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=\int { \frac {x^{2}}{\sqrt {a \sin \left (d x + c\right ) + a}} \,d x } \] Input:
integrate(x^2/(a+a*sin(d*x+c))^(1/2),x, algorithm="maxima")
Output:
integrate(x^2/sqrt(a*sin(d*x + c) + a), x)
\[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=\int { \frac {x^{2}}{\sqrt {a \sin \left (d x + c\right ) + a}} \,d x } \] Input:
integrate(x^2/(a+a*sin(d*x+c))^(1/2),x, algorithm="giac")
Output:
integrate(x^2/sqrt(a*sin(d*x + c) + a), x)
Timed out. \[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=\int \frac {x^2}{\sqrt {a+a\,\sin \left (c+d\,x\right )}} \,d x \] Input:
int(x^2/(a + a*sin(c + d*x))^(1/2),x)
Output:
int(x^2/(a + a*sin(c + d*x))^(1/2), x)
\[ \int \frac {x^2}{\sqrt {a+a \sin (c+d x)}} \, dx=\frac {\sqrt {a}\, \left (\int \frac {\sqrt {\sin \left (d x +c \right )+1}\, x^{2}}{\sin \left (d x +c \right )+1}d x \right )}{a} \] Input:
int(x^2/(a+a*sin(d*x+c))^(1/2),x)
Output:
(sqrt(a)*int((sqrt(sin(c + d*x) + 1)*x**2)/(sin(c + d*x) + 1),x))/a