Integrand size = 19, antiderivative size = 89 \[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=\frac {d \text {arctanh}\left (\frac {\sqrt {b} x^2}{\sqrt {-a+b x^4}}\right )}{2 \sqrt {b}}+\frac {\sqrt [4]{a} c \sqrt {1-\frac {b x^4}{a}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right ),-1\right )}{\sqrt [4]{b} \sqrt {-a+b x^4}} \]
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Time = 0.04 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.316, Rules used = {1899, 230, 227, 281, 223, 212} \[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=\frac {\sqrt [4]{a} c \sqrt {1-\frac {b x^4}{a}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right ),-1\right )}{\sqrt [4]{b} \sqrt {b x^4-a}}+\frac {d \text {arctanh}\left (\frac {\sqrt {b} x^2}{\sqrt {b x^4-a}}\right )}{2 \sqrt {b}} \]
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Rule 212
Rule 223
Rule 227
Rule 230
Rule 281
Rule 1899
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {c}{\sqrt {-a+b x^4}}+\frac {d x}{\sqrt {-a+b x^4}}\right ) \, dx \\ & = c \int \frac {1}{\sqrt {-a+b x^4}} \, dx+d \int \frac {x}{\sqrt {-a+b x^4}} \, dx \\ & = \frac {1}{2} d \text {Subst}\left (\int \frac {1}{\sqrt {-a+b x^2}} \, dx,x,x^2\right )+\frac {\left (c \sqrt {1-\frac {b x^4}{a}}\right ) \int \frac {1}{\sqrt {1-\frac {b x^4}{a}}} \, dx}{\sqrt {-a+b x^4}} \\ & = \frac {\sqrt [4]{a} c \sqrt {1-\frac {b x^4}{a}} F\left (\left .\sin ^{-1}\left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )\right |-1\right )}{\sqrt [4]{b} \sqrt {-a+b x^4}}+\frac {1}{2} d \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {x^2}{\sqrt {-a+b x^4}}\right ) \\ & = \frac {d \tanh ^{-1}\left (\frac {\sqrt {b} x^2}{\sqrt {-a+b x^4}}\right )}{2 \sqrt {b}}+\frac {\sqrt [4]{a} c \sqrt {1-\frac {b x^4}{a}} F\left (\left .\sin ^{-1}\left (\frac {\sqrt [4]{b} x}{\sqrt [4]{a}}\right )\right |-1\right )}{\sqrt [4]{b} \sqrt {-a+b x^4}} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 10.05 (sec) , antiderivative size = 83, normalized size of antiderivative = 0.93 \[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=\frac {d \text {arctanh}\left (\frac {\sqrt {b} x^2}{\sqrt {-a+b x^4}}\right )}{2 \sqrt {b}}+\frac {c x \sqrt {1-\frac {b x^4}{a}} \operatorname {Hypergeometric2F1}\left (\frac {1}{4},\frac {1}{2},\frac {5}{4},\frac {b x^4}{a}\right )}{\sqrt {-a+b x^4}} \]
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Time = 1.55 (sec) , antiderivative size = 95, normalized size of antiderivative = 1.07
method | result | size |
default | \(\frac {c \sqrt {1+\frac {x^{2} \sqrt {b}}{\sqrt {a}}}\, \sqrt {1-\frac {x^{2} \sqrt {b}}{\sqrt {a}}}\, F\left (x \sqrt {-\frac {\sqrt {b}}{\sqrt {a}}}, i\right )}{\sqrt {-\frac {\sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}-a}}+\frac {d \ln \left (x^{2} \sqrt {b}+\sqrt {b \,x^{4}-a}\right )}{2 \sqrt {b}}\) | \(95\) |
elliptic | \(\frac {c \sqrt {1+\frac {x^{2} \sqrt {b}}{\sqrt {a}}}\, \sqrt {1-\frac {x^{2} \sqrt {b}}{\sqrt {a}}}\, F\left (x \sqrt {-\frac {\sqrt {b}}{\sqrt {a}}}, i\right )}{\sqrt {-\frac {\sqrt {b}}{\sqrt {a}}}\, \sqrt {b \,x^{4}-a}}+\frac {d \ln \left (2 x^{2} \sqrt {b}+2 \sqrt {b \,x^{4}-a}\right )}{2 \sqrt {b}}\) | \(98\) |
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none
Time = 0.12 (sec) , antiderivative size = 73, normalized size of antiderivative = 0.82 \[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=-\frac {4 \, b^{\frac {3}{2}} c \left (\frac {a}{b}\right )^{\frac {3}{4}} F(\arcsin \left (\frac {\left (\frac {a}{b}\right )^{\frac {1}{4}}}{x}\right )\,|\,-1) - a \sqrt {b} d \log \left (2 \, b x^{4} + 2 \, \sqrt {b x^{4} - a} \sqrt {b} x^{2} - a\right )}{4 \, a b} \]
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Time = 1.13 (sec) , antiderivative size = 90, normalized size of antiderivative = 1.01 \[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=d \left (\begin {cases} \frac {\operatorname {acosh}{\left (\frac {\sqrt {b} x^{2}}{\sqrt {a}} \right )}}{2 \sqrt {b}} & \text {for}\: \left |{\frac {b x^{4}}{a}}\right | > 1 \\- \frac {i \operatorname {asin}{\left (\frac {\sqrt {b} x^{2}}{\sqrt {a}} \right )}}{2 \sqrt {b}} & \text {otherwise} \end {cases}\right ) - \frac {i c x \Gamma \left (\frac {1}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{4}, \frac {1}{2} \\ \frac {5}{4} \end {matrix}\middle | {\frac {b x^{4}}{a}} \right )}}{4 \sqrt {a} \Gamma \left (\frac {5}{4}\right )} \]
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\[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=\int { \frac {d x + c}{\sqrt {b x^{4} - a}} \,d x } \]
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\[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=\int { \frac {d x + c}{\sqrt {b x^{4} - a}} \,d x } \]
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Timed out. \[ \int \frac {c+d x}{\sqrt {-a+b x^4}} \, dx=\int \frac {c+d\,x}{\sqrt {b\,x^4-a}} \,d x \]
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