Integrand size = 42, antiderivative size = 385 \[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\frac {f \sqrt {a+b x^4}}{2 b}+\frac {g x \sqrt {a+b x^4}}{3 b}+\frac {h x^2 \sqrt {a+b x^4}}{4 b}+\frac {i x^3 \sqrt {a+b x^4}}{5 b}+\frac {(5 b e-3 a i) x \sqrt {a+b x^4}}{5 b^{3/2} \left (\sqrt {a}+\sqrt {b} x^2\right )}+\frac {(2 b d-a h) \text {arctanh}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right )}{4 b^{3/2}}-\frac {\sqrt [4]{a} (5 b e-3 a i) \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} E\left (2 \arctan \left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{5 b^{7/4} \sqrt {a+b x^4}}+\frac {\sqrt [4]{a} \left (15 b e+\frac {5 \sqrt {b} (3 b c-a g)}{\sqrt {a}}-9 a i\right ) \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} \operatorname {EllipticF}\left (2 \arctan \left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right ),\frac {1}{2}\right )}{30 b^{7/4} \sqrt {a+b x^4}} \]
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Time = 0.30 (sec) , antiderivative size = 385, normalized size of antiderivative = 1.00, number of steps used = 12, number of rules used = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.238, Rules used = {1899, 1833, 1829, 655, 223, 212, 1902, 1212, 226, 1210} \[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\frac {\sqrt [4]{a} \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} \operatorname {EllipticF}\left (2 \arctan \left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right ),\frac {1}{2}\right ) \left (\frac {5 \sqrt {b} (3 b c-a g)}{\sqrt {a}}-9 a i+15 b e\right )}{30 b^{7/4} \sqrt {a+b x^4}}-\frac {\sqrt [4]{a} \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} (5 b e-3 a i) E\left (2 \arctan \left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{5 b^{7/4} \sqrt {a+b x^4}}+\frac {\text {arctanh}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right ) (2 b d-a h)}{4 b^{3/2}}+\frac {x \sqrt {a+b x^4} (5 b e-3 a i)}{5 b^{3/2} \left (\sqrt {a}+\sqrt {b} x^2\right )}+\frac {f \sqrt {a+b x^4}}{2 b}+\frac {g x \sqrt {a+b x^4}}{3 b}+\frac {h x^2 \sqrt {a+b x^4}}{4 b}+\frac {i x^3 \sqrt {a+b x^4}}{5 b} \]
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Rule 212
Rule 223
Rule 226
Rule 655
Rule 1210
Rule 1212
Rule 1829
Rule 1833
Rule 1899
Rule 1902
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {x \left (d+f x^2+h x^4\right )}{\sqrt {a+b x^4}}+\frac {c+e x^2+g x^4+i x^6}{\sqrt {a+b x^4}}\right ) \, dx \\ & = \int \frac {x \left (d+f x^2+h x^4\right )}{\sqrt {a+b x^4}} \, dx+\int \frac {c+e x^2+g x^4+i x^6}{\sqrt {a+b x^4}} \, dx \\ & = \frac {i x^3 \sqrt {a+b x^4}}{5 b}+\frac {1}{2} \text {Subst}\left (\int \frac {d+f x+h x^2}{\sqrt {a+b x^2}} \, dx,x,x^2\right )+\frac {\int \frac {5 b c+(5 b e-3 a i) x^2+5 b g x^4}{\sqrt {a+b x^4}} \, dx}{5 b} \\ & = \frac {g x \sqrt {a+b x^4}}{3 b}+\frac {h x^2 \sqrt {a+b x^4}}{4 b}+\frac {i x^3 \sqrt {a+b x^4}}{5 b}+\frac {\int \frac {5 b (3 b c-a g)+3 b (5 b e-3 a i) x^2}{\sqrt {a+b x^4}} \, dx}{15 b^2}+\frac {\text {Subst}\left (\int \frac {2 b d-a h+2 b f x}{\sqrt {a+b x^2}} \, dx,x,x^2\right )}{4 b} \\ & = \frac {f \sqrt {a+b x^4}}{2 b}+\frac {g x \sqrt {a+b x^4}}{3 b}+\frac {h x^2 \sqrt {a+b x^4}}{4 b}+\frac {i x^3 \sqrt {a+b x^4}}{5 b}+\frac {(2 b d-a h) \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,x^2\right )}{4 b}-\frac {\left (\sqrt {a} (5 b e-3 a i)\right ) \int \frac {1-\frac {\sqrt {b} x^2}{\sqrt {a}}}{\sqrt {a+b x^4}} \, dx}{5 b^{3/2}}+\frac {\left (5 \sqrt {b} (3 b c-a g)+3 \sqrt {a} (5 b e-3 a i)\right ) \int \frac {1}{\sqrt {a+b x^4}} \, dx}{15 b^{3/2}} \\ & = \frac {f \sqrt {a+b x^4}}{2 b}+\frac {g x \sqrt {a+b x^4}}{3 b}+\frac {h x^2 \sqrt {a+b x^4}}{4 b}+\frac {i x^3 \sqrt {a+b x^4}}{5 b}+\frac {(5 b e-3 a i) x \sqrt {a+b x^4}}{5 b^{3/2} \left (\sqrt {a}+\sqrt {b} x^2\right )}-\frac {\sqrt [4]{a} (5 b e-3 a i) \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} E\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{5 b^{7/4} \sqrt {a+b x^4}}+\frac {\left (5 \sqrt {b} (3 b c-a g)+3 \sqrt {a} (5 b e-3 a i)\right ) \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{30 \sqrt [4]{a} b^{7/4} \sqrt {a+b x^4}}+\frac {(2 b d-a h) \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {x^2}{\sqrt {a+b x^4}}\right )}{4 b} \\ & = \frac {f \sqrt {a+b x^4}}{2 b}+\frac {g x \sqrt {a+b x^4}}{3 b}+\frac {h x^2 \sqrt {a+b x^4}}{4 b}+\frac {i x^3 \sqrt {a+b x^4}}{5 b}+\frac {(5 b e-3 a i) x \sqrt {a+b x^4}}{5 b^{3/2} \left (\sqrt {a}+\sqrt {b} x^2\right )}+\frac {(2 b d-a h) \tanh ^{-1}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right )}{4 b^{3/2}}-\frac {\sqrt [4]{a} (5 b e-3 a i) \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} E\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{5 b^{7/4} \sqrt {a+b x^4}}+\frac {\left (5 \sqrt {b} (3 b c-a g)+3 \sqrt {a} (5 b e-3 a i)\right ) \left (\sqrt {a}+\sqrt {b} x^2\right ) \sqrt {\frac {a+b x^4}{\left (\sqrt {a}+\sqrt {b} x^2\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{30 \sqrt [4]{a} b^{7/4} \sqrt {a+b x^4}} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 10.23 (sec) , antiderivative size = 281, normalized size of antiderivative = 0.73 \[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\frac {30 a \sqrt {b} f+20 a \sqrt {b} g x+15 a \sqrt {b} h x^2+12 a \sqrt {b} i x^3+30 b^{3/2} f x^4+20 b^{3/2} g x^5+15 b^{3/2} h x^6+12 b^{3/2} i x^7+30 b d \sqrt {a+b x^4} \text {arctanh}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right )-15 a h \sqrt {a+b x^4} \text {arctanh}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right )-20 \sqrt {b} (-3 b c+a g) x \sqrt {1+\frac {b x^4}{a}} \operatorname {Hypergeometric2F1}\left (\frac {1}{4},\frac {1}{2},\frac {5}{4},-\frac {b x^4}{a}\right )+4 \sqrt {b} (5 b e-3 a i) x^3 \sqrt {1+\frac {b x^4}{a}} \operatorname {Hypergeometric2F1}\left (\frac {1}{2},\frac {3}{4},\frac {7}{4},-\frac {b x^4}{a}\right )}{60 b^{3/2} \sqrt {a+b x^4}} \]
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Result contains complex when optimal does not.
Time = 2.01 (sec) , antiderivative size = 287, normalized size of antiderivative = 0.75
method | result | size |
elliptic | \(\frac {i \,x^{3} \sqrt {b \,x^{4}+a}}{5 b}+\frac {h \,x^{2} \sqrt {b \,x^{4}+a}}{4 b}+\frac {g x \sqrt {b \,x^{4}+a}}{3 b}+\frac {f \sqrt {b \,x^{4}+a}}{2 b}+\frac {\left (c -\frac {a g}{3 b}\right ) \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )}{\sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}}+\frac {\left (d -\frac {a h}{2 b}\right ) \ln \left (2 x^{2} \sqrt {b}+2 \sqrt {b \,x^{4}+a}\right )}{2 \sqrt {b}}+\frac {i \left (e -\frac {3 a i}{5 b}\right ) \sqrt {a}\, \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \left (F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )-E\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )\right )}{\sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}\, \sqrt {b}}\) | \(287\) |
risch | \(\frac {\left (12 i \,x^{3}+15 h \,x^{2}+20 g x +30 f \right ) \sqrt {b \,x^{4}+a}}{60 b}-\frac {\frac {10 a g \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )}{\sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}}-\frac {30 b c \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )}{\sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}}+\frac {i \left (18 a i -30 b e \right ) \sqrt {a}\, \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \left (F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )-E\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )\right )}{\sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}\, \sqrt {b}}+\frac {\left (15 a h -30 b d \right ) \ln \left (x^{2} \sqrt {b}+\sqrt {b \,x^{4}+a}\right )}{2 \sqrt {b}}}{30 b}\) | \(323\) |
default | \(\frac {c \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )}{\sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}}+i \left (\frac {x^{3} \sqrt {b \,x^{4}+a}}{5 b}-\frac {3 i a^{\frac {3}{2}} \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \left (F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )-E\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )\right )}{5 b^{\frac {3}{2}} \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}}\right )+h \left (\frac {x^{2} \sqrt {b \,x^{4}+a}}{4 b}-\frac {a \ln \left (x^{2} \sqrt {b}+\sqrt {b \,x^{4}+a}\right )}{4 b^{\frac {3}{2}}}\right )+g \left (\frac {x \sqrt {b \,x^{4}+a}}{3 b}-\frac {a \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )}{3 b \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}}\right )+\frac {f \sqrt {b \,x^{4}+a}}{2 b}+\frac {i e \sqrt {a}\, \sqrt {1-\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {b}\, x^{2}}{\sqrt {a}}}\, \left (F\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )-E\left (x \sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}, i\right )\right )}{\sqrt {\frac {i \sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}+a}\, \sqrt {b}}+\frac {d \ln \left (x^{2} \sqrt {b}+\sqrt {b \,x^{4}+a}\right )}{2 \sqrt {b}}\) | \(460\) |
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Time = 0.17 (sec) , antiderivative size = 204, normalized size of antiderivative = 0.53 \[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\frac {24 \, {\left (5 \, a b e - 3 \, a^{2} i\right )} \sqrt {b} x \left (-\frac {a}{b}\right )^{\frac {3}{4}} E(\arcsin \left (\frac {\left (-\frac {a}{b}\right )^{\frac {1}{4}}}{x}\right )\,|\,-1) + 8 \, {\left (15 \, b^{2} c - 15 \, a b e - 5 \, a b g + 9 \, a^{2} i\right )} \sqrt {b} x \left (-\frac {a}{b}\right )^{\frac {3}{4}} F(\arcsin \left (\frac {\left (-\frac {a}{b}\right )^{\frac {1}{4}}}{x}\right )\,|\,-1) - 15 \, {\left (2 \, a b d - a^{2} h\right )} \sqrt {b} x \log \left (-2 \, b x^{4} + 2 \, \sqrt {b x^{4} + a} \sqrt {b} x^{2} - a\right ) + 2 \, {\left (12 \, a b i x^{4} + 15 \, a b h x^{3} + 20 \, a b g x^{2} + 30 \, a b f x + 60 \, a b e - 36 \, a^{2} i\right )} \sqrt {b x^{4} + a}}{120 \, a b^{2} x} \]
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Time = 3.29 (sec) , antiderivative size = 260, normalized size of antiderivative = 0.68 \[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\frac {\sqrt {a} h x^{2} \sqrt {1 + \frac {b x^{4}}{a}}}{4 b} - \frac {a h \operatorname {asinh}{\left (\frac {\sqrt {b} x^{2}}{\sqrt {a}} \right )}}{4 b^{\frac {3}{2}}} + f \left (\begin {cases} \frac {x^{4}}{4 \sqrt {a}} & \text {for}\: b = 0 \\\frac {\sqrt {a + b x^{4}}}{2 b} & \text {otherwise} \end {cases}\right ) + \frac {d \operatorname {asinh}{\left (\frac {\sqrt {b} x^{2}}{\sqrt {a}} \right )}}{2 \sqrt {b}} + \frac {c x \Gamma \left (\frac {1}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{4}, \frac {1}{2} \\ \frac {5}{4} \end {matrix}\middle | {\frac {b x^{4} e^{i \pi }}{a}} \right )}}{4 \sqrt {a} \Gamma \left (\frac {5}{4}\right )} + \frac {e x^{3} \Gamma \left (\frac {3}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{2}, \frac {3}{4} \\ \frac {7}{4} \end {matrix}\middle | {\frac {b x^{4} e^{i \pi }}{a}} \right )}}{4 \sqrt {a} \Gamma \left (\frac {7}{4}\right )} + \frac {g x^{5} \Gamma \left (\frac {5}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{2}, \frac {5}{4} \\ \frac {9}{4} \end {matrix}\middle | {\frac {b x^{4} e^{i \pi }}{a}} \right )}}{4 \sqrt {a} \Gamma \left (\frac {9}{4}\right )} + \frac {i x^{7} \Gamma \left (\frac {7}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{2}, \frac {7}{4} \\ \frac {11}{4} \end {matrix}\middle | {\frac {b x^{4} e^{i \pi }}{a}} \right )}}{4 \sqrt {a} \Gamma \left (\frac {11}{4}\right )} \]
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\[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\int { \frac {i x^{6} + h x^{5} + g x^{4} + f x^{3} + e x^{2} + d x + c}{\sqrt {b x^{4} + a}} \,d x } \]
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\[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\int { \frac {i x^{6} + h x^{5} + g x^{4} + f x^{3} + e x^{2} + d x + c}{\sqrt {b x^{4} + a}} \,d x } \]
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Timed out. \[ \int \frac {c+d x+e x^2+f x^3+g x^4+h x^5+i x^6}{\sqrt {a+b x^4}} \, dx=\int \frac {i\,x^6+h\,x^5+g\,x^4+f\,x^3+e\,x^2+d\,x+c}{\sqrt {b\,x^4+a}} \,d x \]
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