Integrand size = 23, antiderivative size = 316 \[ \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx=\frac {2 \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a}}\right )}{a^{3/2} d}-\frac {(2 a-3 b) \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a-b}}\right )}{2 (a-b)^{5/2} d}+\frac {b \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a-b}}\right )}{4 (a-b)^{5/2} d}-\frac {b \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a+b}}\right )}{4 (a+b)^{5/2} d}-\frac {(2 a+3 b) \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a+b}}\right )}{2 (a+b)^{5/2} d}-\frac {2 b^4}{a \left (a^2-b^2\right )^2 d \sqrt {a+b \text {sech}(c+d x)}}-\frac {\sqrt {a+b \text {sech}(c+d x)}}{4 (a+b)^2 d (1-\text {sech}(c+d x))}-\frac {\sqrt {a+b \text {sech}(c+d x)}}{4 (a-b)^2 d (1+\text {sech}(c+d x))} \]
2*arctanh((a+b*sech(d*x+c))^(1/2)/a^(1/2))/a^(3/2)/d-1/2*(2*a-3*b)*arctanh ((a+b*sech(d*x+c))^(1/2)/(a-b)^(1/2))/(a-b)^(5/2)/d+1/4*b*arctanh((a+b*sec h(d*x+c))^(1/2)/(a-b)^(1/2))/(a-b)^(5/2)/d-1/4*b*arctanh((a+b*sech(d*x+c)) ^(1/2)/(a+b)^(1/2))/(a+b)^(5/2)/d-1/2*(2*a+3*b)*arctanh((a+b*sech(d*x+c))^ (1/2)/(a+b)^(1/2))/(a+b)^(5/2)/d-2*b^4/a/(a^2-b^2)^2/d/(a+b*sech(d*x+c))^( 1/2)-1/4*(a+b*sech(d*x+c))^(1/2)/(a+b)^2/d/(1-sech(d*x+c))-1/4*(a+b*sech(d *x+c))^(1/2)/(a-b)^2/d/(1+sech(d*x+c))
Result contains higher order function than in optimal. Order 5 vs. order 3 in optimal.
Time = 1.69 (sec) , antiderivative size = 315, normalized size of antiderivative = 1.00 \[ \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx=-\frac {-\frac {2 \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a-b}}\right )}{\sqrt {a-b}}+\frac {2 \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a+b}}\right )}{\sqrt {a+b}}-\frac {2 a \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},1,\frac {1}{2},\frac {a+b \text {sech}(c+d x)}{a-b}\right )}{(a-b) \sqrt {a+b \text {sech}(c+d x)}}+\frac {2 a \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},1,\frac {1}{2},\frac {a+b \text {sech}(c+d x)}{a+b}\right )}{(a+b) \sqrt {a+b \text {sech}(c+d x)}}+\frac {4 b \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},1,\frac {1}{2},1+\frac {b \text {sech}(c+d x)}{a}\right )}{a \sqrt {a+b \text {sech}(c+d x)}}+\frac {b^2 \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},2,\frac {1}{2},\frac {a+b \text {sech}(c+d x)}{a-b}\right )}{(a-b)^2 \sqrt {a+b \text {sech}(c+d x)}}-\frac {b^2 \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},2,\frac {1}{2},\frac {a+b \text {sech}(c+d x)}{a+b}\right )}{(a+b)^2 \sqrt {a+b \text {sech}(c+d x)}}}{2 b d} \]
-1/2*((-2*ArcTanh[Sqrt[a + b*Sech[c + d*x]]/Sqrt[a - b]])/Sqrt[a - b] + (2 *ArcTanh[Sqrt[a + b*Sech[c + d*x]]/Sqrt[a + b]])/Sqrt[a + b] - (2*a*Hyperg eometric2F1[-1/2, 1, 1/2, (a + b*Sech[c + d*x])/(a - b)])/((a - b)*Sqrt[a + b*Sech[c + d*x]]) + (2*a*Hypergeometric2F1[-1/2, 1, 1/2, (a + b*Sech[c + d*x])/(a + b)])/((a + b)*Sqrt[a + b*Sech[c + d*x]]) + (4*b*Hypergeometric 2F1[-1/2, 1, 1/2, 1 + (b*Sech[c + d*x])/a])/(a*Sqrt[a + b*Sech[c + d*x]]) + (b^2*Hypergeometric2F1[-1/2, 2, 1/2, (a + b*Sech[c + d*x])/(a - b)])/((a - b)^2*Sqrt[a + b*Sech[c + d*x]]) - (b^2*Hypergeometric2F1[-1/2, 2, 1/2, (a + b*Sech[c + d*x])/(a + b)])/((a + b)^2*Sqrt[a + b*Sech[c + d*x]]))/(b* d)
Time = 0.60 (sec) , antiderivative size = 310, normalized size of antiderivative = 0.98, number of steps used = 8, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.304, Rules used = {3042, 26, 4373, 561, 25, 1674, 2009}
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.
\(\displaystyle \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \int \frac {i}{\cot \left (i c+i d x+\frac {\pi }{2}\right )^3 \left (a+b \csc \left (i c+i d x+\frac {\pi }{2}\right )\right )^{3/2}}dx\) |
\(\Big \downarrow \) 26 |
\(\displaystyle i \int \frac {1}{\cot \left (\frac {1}{2} (2 i c+\pi )+i d x\right )^3 \left (a+b \csc \left (\frac {1}{2} (2 i c+\pi )+i d x\right )\right )^{3/2}}dx\) |
\(\Big \downarrow \) 4373 |
\(\displaystyle -\frac {b^4 \int \frac {\cosh (c+d x)}{b (a+b \text {sech}(c+d x))^{3/2} \left (b^2-b^2 \text {sech}^2(c+d x)\right )^2}d(b \text {sech}(c+d x))}{d}\) |
\(\Big \downarrow \) 561 |
\(\displaystyle -\frac {2 b^4 \int -\frac {\cosh ^2(c+d x)}{b^2 \left (a-b^2 \text {sech}^2(c+d x)\right ) \left (b^4 \text {sech}^4(c+d x)-2 a b^2 \text {sech}^2(c+d x)+a^2-b^2\right )^2}d\sqrt {a+b \text {sech}(c+d x)}}{d}\) |
\(\Big \downarrow \) 25 |
\(\displaystyle \frac {2 b^4 \int \frac {\cosh ^2(c+d x)}{b^2 \left (a-b^2 \text {sech}^2(c+d x)\right ) \left (b^4 \text {sech}^4(c+d x)-2 a b^2 \text {sech}^2(c+d x)+a^2-b^2\right )^2}d\sqrt {a+b \text {sech}(c+d x)}}{d}\) |
\(\Big \downarrow \) 1674 |
\(\displaystyle \frac {2 b^4 \int \left (\frac {\cosh ^2(c+d x)}{a (a-b)^2 b^2 (a+b)^2}+\frac {1}{a b^4 \left (a-b^2 \text {sech}^2(c+d x)\right )}+\frac {3 b-2 a}{4 (a-b)^2 b^4 \left (-b^2 \text {sech}^2(c+d x)+a-b\right )}+\frac {-2 a-3 b}{4 b^4 (a+b)^2 \left (-b^2 \text {sech}^2(c+d x)+a+b\right )}+\frac {1}{4 (a-b) b^3 \left (-b^2 \text {sech}^2(c+d x)+a-b\right )^2}-\frac {1}{4 b^3 (a+b) \left (-b^2 \text {sech}^2(c+d x)+a+b\right )^2}\right )d\sqrt {a+b \text {sech}(c+d x)}}{d}\) |
\(\Big \downarrow \) 2009 |
\(\displaystyle -\frac {2 b^4 \left (-\frac {\text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a}}\right )}{a^{3/2} b^4}+\frac {\cosh (c+d x)}{a b \left (a^2-b^2\right )^2}+\frac {(2 a-3 b) \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a-b}}\right )}{4 b^4 (a-b)^{5/2}}+\frac {(2 a+3 b) \text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a+b}}\right )}{4 b^4 (a+b)^{5/2}}-\frac {\text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a-b}}\right )}{8 b^3 (a-b)^{5/2}}+\frac {\text {arctanh}\left (\frac {\sqrt {a+b \text {sech}(c+d x)}}{\sqrt {a+b}}\right )}{8 b^3 (a+b)^{5/2}}-\frac {\text {sech}(c+d x)}{8 b^2 (a-b)^2 \left (a-b^2 \text {sech}^2(c+d x)-b\right )}+\frac {\text {sech}(c+d x)}{8 b^2 (a+b)^2 \left (a-b^2 \text {sech}^2(c+d x)+b\right )}\right )}{d}\) |
(-2*b^4*(-(ArcTanh[Sqrt[a + b*Sech[c + d*x]]/Sqrt[a]]/(a^(3/2)*b^4)) + ((2 *a - 3*b)*ArcTanh[Sqrt[a + b*Sech[c + d*x]]/Sqrt[a - b]])/(4*(a - b)^(5/2) *b^4) - ArcTanh[Sqrt[a + b*Sech[c + d*x]]/Sqrt[a - b]]/(8*(a - b)^(5/2)*b^ 3) + ArcTanh[Sqrt[a + b*Sech[c + d*x]]/Sqrt[a + b]]/(8*b^3*(a + b)^(5/2)) + ((2*a + 3*b)*ArcTanh[Sqrt[a + b*Sech[c + d*x]]/Sqrt[a + b]])/(4*b^4*(a + b)^(5/2)) + Cosh[c + d*x]/(a*b*(a^2 - b^2)^2) - Sech[c + d*x]/(8*(a - b)^ 2*b^2*(a - b - b^2*Sech[c + d*x]^2)) + Sech[c + d*x]/(8*b^2*(a + b)^2*(a + b - b^2*Sech[c + d*x]^2))))/d
3.2.46.3.1 Defintions of rubi rules used
Int[(Complex[0, a_])*(Fx_), x_Symbol] :> Simp[(Complex[Identity[0], a]) I nt[Fx, x], x] /; FreeQ[a, x] && EqQ[a^2, 1]
Int[(x_)^(m_.)*((c_) + (d_.)*(x_))^(n_)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbo l] :> With[{k = Denominator[n]}, Simp[k/d Subst[Int[x^(k*(n + 1) - 1)*(-c /d + x^k/d)^m*Simp[(b*c^2 + a*d^2)/d^2 - 2*b*c*(x^k/d^2) + b*(x^(2*k)/d^2), x]^p, x], x, (c + d*x)^(1/k)], x]] /; FreeQ[{a, b, c, d, m, p}, x] && Frac tionQ[n] && IntegerQ[p] && IntegerQ[m]
Int[((f_.)*(x_))^(m_.)*((d_) + (e_.)*(x_)^2)^(q_.)*((a_) + (b_.)*(x_)^2 + ( c_.)*(x_)^4)^(p_.), x_Symbol] :> Int[ExpandIntegrand[(f*x)^m*(d + e*x^2)^q* (a + b*x^2 + c*x^4)^p, x], x] /; FreeQ[{a, b, c, d, e, f, m, p, q}, x] && N eQ[b^2 - 4*a*c, 0] && (IGtQ[p, 0] || IGtQ[q, 0] || IntegersQ[m, q])
Int[cot[(c_.) + (d_.)*(x_)]^(m_.)*(csc[(c_.) + (d_.)*(x_)]*(b_.) + (a_))^(n _), x_Symbol] :> Simp[-(-1)^((m - 1)/2)/(d*b^(m - 1)) Subst[Int[(b^2 - x^ 2)^((m - 1)/2)*((a + x)^n/x), x], x, b*Csc[c + d*x]], x] /; FreeQ[{a, b, c, d, n}, x] && IntegerQ[(m - 1)/2] && NeQ[a^2 - b^2, 0]
\[\int \frac {\coth \left (d x +c \right )^{3}}{\left (a +b \,\operatorname {sech}\left (d x +c \right )\right )^{\frac {3}{2}}}d x\]
Leaf count of result is larger than twice the leaf count of optimal. 5984 vs. \(2 (266) = 532\).
Time = 6.62 (sec) , antiderivative size = 53212, normalized size of antiderivative = 168.39 \[ \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx=\text {Too large to display} \]
\[ \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx=\int \frac {\coth ^{3}{\left (c + d x \right )}}{\left (a + b \operatorname {sech}{\left (c + d x \right )}\right )^{\frac {3}{2}}}\, dx \]
\[ \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx=\int { \frac {\coth \left (d x + c\right )^{3}}{{\left (b \operatorname {sech}\left (d x + c\right ) + a\right )}^{\frac {3}{2}}} \,d x } \]
\[ \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx=\int { \frac {\coth \left (d x + c\right )^{3}}{{\left (b \operatorname {sech}\left (d x + c\right ) + a\right )}^{\frac {3}{2}}} \,d x } \]
Timed out. \[ \int \frac {\coth ^3(c+d x)}{(a+b \text {sech}(c+d x))^{3/2}} \, dx=\int \frac {{\mathrm {coth}\left (c+d\,x\right )}^3}{{\left (a+\frac {b}{\mathrm {cosh}\left (c+d\,x\right )}\right )}^{3/2}} \,d x \]