Optimal. Leaf size=142 \[ \frac {2 a x}{(b-c)^2}+\frac {(b+c) x^2}{2 (b-c)^2}-\frac {a \sqrt {a+b x} \sqrt {a+c x}}{2 b (b-c) c}-\frac {(a+b x)^{3/2} \sqrt {a+c x}}{b (b-c)^2}+\frac {a^2 \tanh ^{-1}\left (\frac {\sqrt {c} \sqrt {a+b x}}{\sqrt {b} \sqrt {a+c x}}\right )}{2 b^{3/2} c^{3/2}} \]
[Out]
________________________________________________________________________________________
Rubi [A]
time = 0.17, antiderivative size = 142, normalized size of antiderivative = 1.00, number of steps
used = 7, number of rules used = 5, integrand size = 25, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {6822, 52, 65,
223, 212} \begin {gather*} \frac {a^2 \tanh ^{-1}\left (\frac {\sqrt {c} \sqrt {a+b x}}{\sqrt {b} \sqrt {a+c x}}\right )}{2 b^{3/2} c^{3/2}}+\frac {2 a x}{(b-c)^2}-\frac {a \sqrt {a+b x} \sqrt {a+c x}}{2 b c (b-c)}-\frac {(a+b x)^{3/2} \sqrt {a+c x}}{b (b-c)^2}+\frac {x^2 (b+c)}{2 (b-c)^2} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
Rule 52
Rule 65
Rule 212
Rule 223
Rule 6822
Rubi steps
\begin {align*} \int \frac {x^2}{\left (\sqrt {a+b x}+\sqrt {a+c x}\right )^2} \, dx &=\frac {\int \left (2 a+b \left (1+\frac {c}{b}\right ) x-2 \sqrt {a+b x} \sqrt {a+c x}\right ) \, dx}{(b-c)^2}\\ &=\frac {2 a x}{(b-c)^2}+\frac {(b+c) x^2}{2 (b-c)^2}-\frac {2 \int \sqrt {a+b x} \sqrt {a+c x} \, dx}{(b-c)^2}\\ &=\frac {2 a x}{(b-c)^2}+\frac {(b+c) x^2}{2 (b-c)^2}-\frac {(a+b x)^{3/2} \sqrt {a+c x}}{b (b-c)^2}-\frac {a \int \frac {\sqrt {a+b x}}{\sqrt {a+c x}} \, dx}{2 b (b-c)}\\ &=\frac {2 a x}{(b-c)^2}+\frac {(b+c) x^2}{2 (b-c)^2}-\frac {a \sqrt {a+b x} \sqrt {a+c x}}{2 b (b-c) c}-\frac {(a+b x)^{3/2} \sqrt {a+c x}}{b (b-c)^2}+\frac {a^2 \int \frac {1}{\sqrt {a+b x} \sqrt {a+c x}} \, dx}{4 b c}\\ &=\frac {2 a x}{(b-c)^2}+\frac {(b+c) x^2}{2 (b-c)^2}-\frac {a \sqrt {a+b x} \sqrt {a+c x}}{2 b (b-c) c}-\frac {(a+b x)^{3/2} \sqrt {a+c x}}{b (b-c)^2}+\frac {a^2 \text {Subst}\left (\int \frac {1}{\sqrt {a-\frac {a c}{b}+\frac {c x^2}{b}}} \, dx,x,\sqrt {a+b x}\right )}{2 b^2 c}\\ &=\frac {2 a x}{(b-c)^2}+\frac {(b+c) x^2}{2 (b-c)^2}-\frac {a \sqrt {a+b x} \sqrt {a+c x}}{2 b (b-c) c}-\frac {(a+b x)^{3/2} \sqrt {a+c x}}{b (b-c)^2}+\frac {a^2 \text {Subst}\left (\int \frac {1}{1-\frac {c x^2}{b}} \, dx,x,\frac {\sqrt {a+b x}}{\sqrt {a+c x}}\right )}{2 b^2 c}\\ &=\frac {2 a x}{(b-c)^2}+\frac {(b+c) x^2}{2 (b-c)^2}-\frac {a \sqrt {a+b x} \sqrt {a+c x}}{2 b (b-c) c}-\frac {(a+b x)^{3/2} \sqrt {a+c x}}{b (b-c)^2}+\frac {a^2 \tanh ^{-1}\left (\frac {\sqrt {c} \sqrt {a+b x}}{\sqrt {b} \sqrt {a+c x}}\right )}{2 b^{3/2} c^{3/2}}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A]
time = 0.67, size = 161, normalized size = 1.13 \begin {gather*} \frac {\frac {b \left (-a^2 b (b-3 c)+b c^2 x \left (b x+c x-2 \sqrt {a+b x} \sqrt {a+c x}\right )-a c \left (-4 b c x+b \sqrt {a+b x} \sqrt {a+c x}+c \sqrt {a+b x} \sqrt {a+c x}\right )\right )}{(b-c)^2}-a^2 \sqrt {\frac {b}{c}} c \log \left (\sqrt {a+b x}-\sqrt {\frac {b}{c}} \sqrt {a+c x}\right )}{2 b^2 c^2} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(384\) vs.
\(2(116)=232\).
time = 0.01, size = 385, normalized size = 2.71
method | result | size |
default | \(\frac {x^{2} b}{2 \left (b -c \right )^{2}}+\frac {x^{2} c}{2 \left (b -c \right )^{2}}+\frac {2 a x}{\left (b -c \right )^{2}}-\frac {\sqrt {b x +a}\, \left (c x +a \right )^{\frac {3}{2}}}{\left (b -c \right )^{2} c}+\frac {\sqrt {c x +a}\, \sqrt {b x +a}\, a}{2 \left (b -c \right )^{2} c}-\frac {\sqrt {c x +a}\, \sqrt {b x +a}\, a}{2 \left (b -c \right )^{2} b}+\frac {\sqrt {\left (b x +a \right ) \left (c x +a \right )}\, \ln \left (\frac {\frac {1}{2} a b +\frac {1}{2} a c +b c x}{\sqrt {b c}}+\sqrt {b c \,x^{2}+\left (a b +a c \right ) x +a^{2}}\right ) a^{2} b}{4 \left (b -c \right )^{2} c \sqrt {c x +a}\, \sqrt {b x +a}\, \sqrt {b c}}-\frac {\sqrt {\left (b x +a \right ) \left (c x +a \right )}\, \ln \left (\frac {\frac {1}{2} a b +\frac {1}{2} a c +b c x}{\sqrt {b c}}+\sqrt {b c \,x^{2}+\left (a b +a c \right ) x +a^{2}}\right ) a^{2}}{2 \left (b -c \right )^{2} \sqrt {c x +a}\, \sqrt {b x +a}\, \sqrt {b c}}+\frac {c \sqrt {\left (b x +a \right ) \left (c x +a \right )}\, \ln \left (\frac {\frac {1}{2} a b +\frac {1}{2} a c +b c x}{\sqrt {b c}}+\sqrt {b c \,x^{2}+\left (a b +a c \right ) x +a^{2}}\right ) a^{2}}{4 \left (b -c \right )^{2} b \sqrt {c x +a}\, \sqrt {b x +a}\, \sqrt {b c}}\) | \(385\) |
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A]
time = 0.37, size = 372, normalized size = 2.62 \begin {gather*} \left [\frac {8 \, a b^{2} c^{2} x + 2 \, {\left (b^{3} c^{2} + b^{2} c^{3}\right )} x^{2} + {\left (a^{2} b^{2} - 2 \, a^{2} b c + a^{2} c^{2}\right )} \sqrt {b c} \log \left (a b^{2} + 2 \, a b c + a c^{2} + 2 \, {\left (2 \, b c + \sqrt {b c} {\left (b + c\right )}\right )} \sqrt {b x + a} \sqrt {c x + a} + 2 \, {\left (b^{2} c + b c^{2}\right )} x + 2 \, {\left (2 \, b c x + a b + a c\right )} \sqrt {b c}\right ) - 2 \, {\left (2 \, b^{2} c^{2} x + a b^{2} c + a b c^{2}\right )} \sqrt {b x + a} \sqrt {c x + a}}{4 \, {\left (b^{4} c^{2} - 2 \, b^{3} c^{3} + b^{2} c^{4}\right )}}, \frac {4 \, a b^{2} c^{2} x + {\left (b^{3} c^{2} + b^{2} c^{3}\right )} x^{2} - {\left (a^{2} b^{2} - 2 \, a^{2} b c + a^{2} c^{2}\right )} \sqrt {-b c} \arctan \left (\frac {\sqrt {-b c} \sqrt {b x + a} \sqrt {c x + a} - \sqrt {-b c} a}{b c x}\right ) - {\left (2 \, b^{2} c^{2} x + a b^{2} c + a b c^{2}\right )} \sqrt {b x + a} \sqrt {c x + a}}{2 \, {\left (b^{4} c^{2} - 2 \, b^{3} c^{3} + b^{2} c^{4}\right )}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {x^{2}}{\left (\sqrt {a + b x} + \sqrt {a + c x}\right )^{2}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 272 vs.
\(2 (116) = 232\).
time = 4.74, size = 272, normalized size = 1.92 \begin {gather*} -\frac {1}{2} \, \sqrt {a b^{2} + {\left (b x + a\right )} b c - a b c} \sqrt {b x + a} {\left (\frac {2 \, {\left (b^{4} c^{2} {\left | b \right |} - b^{3} c^{3} {\left | b \right |}\right )} {\left (b x + a\right )}}{b^{9} c^{2} - 3 \, b^{8} c^{3} + 3 \, b^{7} c^{4} - b^{6} c^{5}} + \frac {a b^{5} c {\left | b \right |} - 2 \, a b^{4} c^{2} {\left | b \right |} + a b^{3} c^{3} {\left | b \right |}}{b^{9} c^{2} - 3 \, b^{8} c^{3} + 3 \, b^{7} c^{4} - b^{6} c^{5}}\right )} - \frac {a^{2} {\left | b \right |} \log \left ({\left | -\sqrt {b c} \sqrt {b x + a} + \sqrt {a b^{2} + {\left (b x + a\right )} b c - a b c} \right |}\right )}{2 \, \sqrt {b c} b^{2} c} + \frac {{\left (b x + a\right )}^{2} b + 2 \, {\left (b x + a\right )} a b + {\left (b x + a\right )}^{2} c - 2 \, {\left (b x + a\right )} a c}{2 \, {\left (b^{4} - 2 \, b^{3} c + b^{2} c^{2}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Mupad [B]
time = 0.25, size = 129, normalized size = 0.91 \begin {gather*} \frac {2\,a\,x}{{\left (b-c\right )}^2}+\frac {x^2\,\left (b+c\right )}{2\,{\left (b-c\right )}^2}-\frac {2\,\left (\frac {x}{2}+\frac {a\,b+a\,c}{4\,b\,c}\right )\,\sqrt {a+b\,x}\,\sqrt {a+c\,x}}{{\left (b-c\right )}^2}+\frac {\ln \left (a\,b+a\,c+2\,b\,c\,x+2\,\sqrt {b}\,\sqrt {c}\,\sqrt {a+b\,x}\,\sqrt {a+c\,x}\right )\,{\left (a\,b-a\,c\right )}^2}{4\,b^{3/2}\,c^{3/2}\,{\left (b-c\right )}^2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________