Integrand size = 17, antiderivative size = 100 \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=-\frac {3 d \sqrt {c+d x}}{4 b^2 (a+b x)}-\frac {(c+d x)^{3/2}}{2 b (a+b x)^2}-\frac {3 d^2 \text {arctanh}\left (\frac {\sqrt {b} \sqrt {c+d x}}{\sqrt {b c-a d}}\right )}{4 b^{5/2} \sqrt {b c-a d}} \] Output:
-3/4*d*(d*x+c)^(1/2)/b^2/(b*x+a)-1/2*(d*x+c)^(3/2)/b/(b*x+a)^2-3/4*d^2*arc tanh(b^(1/2)*(d*x+c)^(1/2)/(-a*d+b*c)^(1/2))/b^(5/2)/(-a*d+b*c)^(1/2)
Time = 0.30 (sec) , antiderivative size = 90, normalized size of antiderivative = 0.90 \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=-\frac {\sqrt {c+d x} (2 b c+3 a d+5 b d x)}{4 b^2 (a+b x)^2}+\frac {3 d^2 \arctan \left (\frac {\sqrt {b} \sqrt {c+d x}}{\sqrt {-b c+a d}}\right )}{4 b^{5/2} \sqrt {-b c+a d}} \] Input:
Integrate[(c + d*x)^(3/2)/(a + b*x)^3,x]
Output:
-1/4*(Sqrt[c + d*x]*(2*b*c + 3*a*d + 5*b*d*x))/(b^2*(a + b*x)^2) + (3*d^2* ArcTan[(Sqrt[b]*Sqrt[c + d*x])/Sqrt[-(b*c) + a*d]])/(4*b^(5/2)*Sqrt[-(b*c) + a*d])
Time = 0.18 (sec) , antiderivative size = 102, normalized size of antiderivative = 1.02, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.235, Rules used = {51, 51, 73, 221}
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.
\(\displaystyle \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx\) |
\(\Big \downarrow \) 51 |
\(\displaystyle \frac {3 d \int \frac {\sqrt {c+d x}}{(a+b x)^2}dx}{4 b}-\frac {(c+d x)^{3/2}}{2 b (a+b x)^2}\) |
\(\Big \downarrow \) 51 |
\(\displaystyle \frac {3 d \left (\frac {d \int \frac {1}{(a+b x) \sqrt {c+d x}}dx}{2 b}-\frac {\sqrt {c+d x}}{b (a+b x)}\right )}{4 b}-\frac {(c+d x)^{3/2}}{2 b (a+b x)^2}\) |
\(\Big \downarrow \) 73 |
\(\displaystyle \frac {3 d \left (\frac {\int \frac {1}{a+\frac {b (c+d x)}{d}-\frac {b c}{d}}d\sqrt {c+d x}}{b}-\frac {\sqrt {c+d x}}{b (a+b x)}\right )}{4 b}-\frac {(c+d x)^{3/2}}{2 b (a+b x)^2}\) |
\(\Big \downarrow \) 221 |
\(\displaystyle \frac {3 d \left (-\frac {d \text {arctanh}\left (\frac {\sqrt {b} \sqrt {c+d x}}{\sqrt {b c-a d}}\right )}{b^{3/2} \sqrt {b c-a d}}-\frac {\sqrt {c+d x}}{b (a+b x)}\right )}{4 b}-\frac {(c+d x)^{3/2}}{2 b (a+b x)^2}\) |
Input:
Int[(c + d*x)^(3/2)/(a + b*x)^3,x]
Output:
-1/2*(c + d*x)^(3/2)/(b*(a + b*x)^2) + (3*d*(-(Sqrt[c + d*x]/(b*(a + b*x)) ) - (d*ArcTanh[(Sqrt[b]*Sqrt[c + d*x])/Sqrt[b*c - a*d]])/(b^(3/2)*Sqrt[b*c - a*d])))/(4*b)
Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[ (a + b*x)^(m + 1)*((c + d*x)^n/(b*(m + 1))), x] - Simp[d*(n/(b*(m + 1))) Int[(a + b*x)^(m + 1)*(c + d*x)^(n - 1), x], x] /; FreeQ[{a, b, c, d, n}, x ] && ILtQ[m, -1] && FractionQ[n] && GtQ[n, 0]
Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> With[ {p = Denominator[m]}, Simp[p/b Subst[Int[x^(p*(m + 1) - 1)*(c - a*(d/b) + d*(x^p/b))^n, x], x, (a + b*x)^(1/p)], x]] /; FreeQ[{a, b, c, d}, x] && Lt Q[-1, m, 0] && LeQ[-1, n, 0] && LeQ[Denominator[n], Denominator[m]] && IntL inearQ[a, b, c, d, m, n, x]
Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(Rt[-a/b, 2]/a)*ArcTanh[x /Rt[-a/b, 2]], x] /; FreeQ[{a, b}, x] && NegQ[a/b]
Time = 0.26 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.79
method | result | size |
pseudoelliptic | \(\frac {d^{2} \left (-\frac {\sqrt {x d +c}\, \left (5 b d x +3 a d +2 b c \right )}{d^{2} \left (b x +a \right )^{2}}+\frac {3 \arctan \left (\frac {b \sqrt {x d +c}}{\sqrt {\left (a d -b c \right ) b}}\right )}{\sqrt {\left (a d -b c \right ) b}}\right )}{4 b^{2}}\) | \(79\) |
derivativedivides | \(2 d^{2} \left (\frac {-\frac {5 \left (x d +c \right )^{\frac {3}{2}}}{8 b}-\frac {3 \left (a d -b c \right ) \sqrt {x d +c}}{8 b^{2}}}{\left (\left (x d +c \right ) b +a d -b c \right )^{2}}+\frac {3 \arctan \left (\frac {b \sqrt {x d +c}}{\sqrt {\left (a d -b c \right ) b}}\right )}{8 b^{2} \sqrt {\left (a d -b c \right ) b}}\right )\) | \(97\) |
default | \(2 d^{2} \left (\frac {-\frac {5 \left (x d +c \right )^{\frac {3}{2}}}{8 b}-\frac {3 \left (a d -b c \right ) \sqrt {x d +c}}{8 b^{2}}}{\left (\left (x d +c \right ) b +a d -b c \right )^{2}}+\frac {3 \arctan \left (\frac {b \sqrt {x d +c}}{\sqrt {\left (a d -b c \right ) b}}\right )}{8 b^{2} \sqrt {\left (a d -b c \right ) b}}\right )\) | \(97\) |
Input:
int((d*x+c)^(3/2)/(b*x+a)^3,x,method=_RETURNVERBOSE)
Output:
1/4*d^2/b^2*(-(d*x+c)^(1/2)*(5*b*d*x+3*a*d+2*b*c)/d^2/(b*x+a)^2+3/((a*d-b* c)*b)^(1/2)*arctan(b*(d*x+c)^(1/2)/((a*d-b*c)*b)^(1/2)))
Leaf count of result is larger than twice the leaf count of optimal. 185 vs. \(2 (80) = 160\).
Time = 0.10 (sec) , antiderivative size = 383, normalized size of antiderivative = 3.83 \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=\left [\frac {3 \, {\left (b^{2} d^{2} x^{2} + 2 \, a b d^{2} x + a^{2} d^{2}\right )} \sqrt {b^{2} c - a b d} \log \left (\frac {b d x + 2 \, b c - a d - 2 \, \sqrt {b^{2} c - a b d} \sqrt {d x + c}}{b x + a}\right ) - 2 \, {\left (2 \, b^{3} c^{2} + a b^{2} c d - 3 \, a^{2} b d^{2} + 5 \, {\left (b^{3} c d - a b^{2} d^{2}\right )} x\right )} \sqrt {d x + c}}{8 \, {\left (a^{2} b^{4} c - a^{3} b^{3} d + {\left (b^{6} c - a b^{5} d\right )} x^{2} + 2 \, {\left (a b^{5} c - a^{2} b^{4} d\right )} x\right )}}, \frac {3 \, {\left (b^{2} d^{2} x^{2} + 2 \, a b d^{2} x + a^{2} d^{2}\right )} \sqrt {-b^{2} c + a b d} \arctan \left (\frac {\sqrt {-b^{2} c + a b d} \sqrt {d x + c}}{b d x + b c}\right ) - {\left (2 \, b^{3} c^{2} + a b^{2} c d - 3 \, a^{2} b d^{2} + 5 \, {\left (b^{3} c d - a b^{2} d^{2}\right )} x\right )} \sqrt {d x + c}}{4 \, {\left (a^{2} b^{4} c - a^{3} b^{3} d + {\left (b^{6} c - a b^{5} d\right )} x^{2} + 2 \, {\left (a b^{5} c - a^{2} b^{4} d\right )} x\right )}}\right ] \] Input:
integrate((d*x+c)^(3/2)/(b*x+a)^3,x, algorithm="fricas")
Output:
[1/8*(3*(b^2*d^2*x^2 + 2*a*b*d^2*x + a^2*d^2)*sqrt(b^2*c - a*b*d)*log((b*d *x + 2*b*c - a*d - 2*sqrt(b^2*c - a*b*d)*sqrt(d*x + c))/(b*x + a)) - 2*(2* b^3*c^2 + a*b^2*c*d - 3*a^2*b*d^2 + 5*(b^3*c*d - a*b^2*d^2)*x)*sqrt(d*x + c))/(a^2*b^4*c - a^3*b^3*d + (b^6*c - a*b^5*d)*x^2 + 2*(a*b^5*c - a^2*b^4* d)*x), 1/4*(3*(b^2*d^2*x^2 + 2*a*b*d^2*x + a^2*d^2)*sqrt(-b^2*c + a*b*d)*a rctan(sqrt(-b^2*c + a*b*d)*sqrt(d*x + c)/(b*d*x + b*c)) - (2*b^3*c^2 + a*b ^2*c*d - 3*a^2*b*d^2 + 5*(b^3*c*d - a*b^2*d^2)*x)*sqrt(d*x + c))/(a^2*b^4* c - a^3*b^3*d + (b^6*c - a*b^5*d)*x^2 + 2*(a*b^5*c - a^2*b^4*d)*x)]
Timed out. \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=\text {Timed out} \] Input:
integrate((d*x+c)**(3/2)/(b*x+a)**3,x)
Output:
Timed out
Exception generated. \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=\text {Exception raised: ValueError} \] Input:
integrate((d*x+c)^(3/2)/(b*x+a)^3,x, algorithm="maxima")
Output:
Exception raised: ValueError >> Computation failed since Maxima requested additional constraints; using the 'assume' command before evaluation *may* help (example of legal syntax is 'assume(a*d-b*c>0)', see `assume?` for m ore detail
Time = 0.12 (sec) , antiderivative size = 108, normalized size of antiderivative = 1.08 \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=\frac {3 \, d^{2} \arctan \left (\frac {\sqrt {d x + c} b}{\sqrt {-b^{2} c + a b d}}\right )}{4 \, \sqrt {-b^{2} c + a b d} b^{2}} - \frac {5 \, {\left (d x + c\right )}^{\frac {3}{2}} b d^{2} - 3 \, \sqrt {d x + c} b c d^{2} + 3 \, \sqrt {d x + c} a d^{3}}{4 \, {\left ({\left (d x + c\right )} b - b c + a d\right )}^{2} b^{2}} \] Input:
integrate((d*x+c)^(3/2)/(b*x+a)^3,x, algorithm="giac")
Output:
3/4*d^2*arctan(sqrt(d*x + c)*b/sqrt(-b^2*c + a*b*d))/(sqrt(-b^2*c + a*b*d) *b^2) - 1/4*(5*(d*x + c)^(3/2)*b*d^2 - 3*sqrt(d*x + c)*b*c*d^2 + 3*sqrt(d* x + c)*a*d^3)/(((d*x + c)*b - b*c + a*d)^2*b^2)
Time = 0.07 (sec) , antiderivative size = 135, normalized size of antiderivative = 1.35 \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=\frac {3\,d^2\,\mathrm {atan}\left (\frac {\sqrt {b}\,\sqrt {c+d\,x}}{\sqrt {a\,d-b\,c}}\right )}{4\,b^{5/2}\,\sqrt {a\,d-b\,c}}-\frac {\frac {5\,d^2\,{\left (c+d\,x\right )}^{3/2}}{4\,b}+\frac {3\,d^2\,\left (a\,d-b\,c\right )\,\sqrt {c+d\,x}}{4\,b^2}}{b^2\,{\left (c+d\,x\right )}^2-\left (2\,b^2\,c-2\,a\,b\,d\right )\,\left (c+d\,x\right )+a^2\,d^2+b^2\,c^2-2\,a\,b\,c\,d} \] Input:
int((c + d*x)^(3/2)/(a + b*x)^3,x)
Output:
(3*d^2*atan((b^(1/2)*(c + d*x)^(1/2))/(a*d - b*c)^(1/2)))/(4*b^(5/2)*(a*d - b*c)^(1/2)) - ((5*d^2*(c + d*x)^(3/2))/(4*b) + (3*d^2*(a*d - b*c)*(c + d *x)^(1/2))/(4*b^2))/(b^2*(c + d*x)^2 - (2*b^2*c - 2*a*b*d)*(c + d*x) + a^2 *d^2 + b^2*c^2 - 2*a*b*c*d)
Time = 0.16 (sec) , antiderivative size = 259, normalized size of antiderivative = 2.59 \[ \int \frac {(c+d x)^{3/2}}{(a+b x)^3} \, dx=\frac {3 \sqrt {b}\, \sqrt {a d -b c}\, \mathit {atan} \left (\frac {\sqrt {d x +c}\, b}{\sqrt {b}\, \sqrt {a d -b c}}\right ) a^{2} d^{2}+6 \sqrt {b}\, \sqrt {a d -b c}\, \mathit {atan} \left (\frac {\sqrt {d x +c}\, b}{\sqrt {b}\, \sqrt {a d -b c}}\right ) a b \,d^{2} x +3 \sqrt {b}\, \sqrt {a d -b c}\, \mathit {atan} \left (\frac {\sqrt {d x +c}\, b}{\sqrt {b}\, \sqrt {a d -b c}}\right ) b^{2} d^{2} x^{2}-3 \sqrt {d x +c}\, a^{2} b \,d^{2}+\sqrt {d x +c}\, a \,b^{2} c d -5 \sqrt {d x +c}\, a \,b^{2} d^{2} x +2 \sqrt {d x +c}\, b^{3} c^{2}+5 \sqrt {d x +c}\, b^{3} c d x}{4 b^{3} \left (a \,b^{2} d \,x^{2}-b^{3} c \,x^{2}+2 a^{2} b d x -2 a \,b^{2} c x +a^{3} d -a^{2} b c \right )} \] Input:
int((d*x+c)^(3/2)/(b*x+a)^3,x)
Output:
(3*sqrt(b)*sqrt(a*d - b*c)*atan((sqrt(c + d*x)*b)/(sqrt(b)*sqrt(a*d - b*c) ))*a**2*d**2 + 6*sqrt(b)*sqrt(a*d - b*c)*atan((sqrt(c + d*x)*b)/(sqrt(b)*s qrt(a*d - b*c)))*a*b*d**2*x + 3*sqrt(b)*sqrt(a*d - b*c)*atan((sqrt(c + d*x )*b)/(sqrt(b)*sqrt(a*d - b*c)))*b**2*d**2*x**2 - 3*sqrt(c + d*x)*a**2*b*d* *2 + sqrt(c + d*x)*a*b**2*c*d - 5*sqrt(c + d*x)*a*b**2*d**2*x + 2*sqrt(c + d*x)*b**3*c**2 + 5*sqrt(c + d*x)*b**3*c*d*x)/(4*b**3*(a**3*d - a**2*b*c + 2*a**2*b*d*x - 2*a*b**2*c*x + a*b**2*d*x**2 - b**3*c*x**2))