Integrand size = 12, antiderivative size = 62 \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=-\frac {b c \sqrt {1-c^2 x^2}}{6 x^2}-\frac {a+b \arcsin (c x)}{3 x^3}-\frac {1}{6} b c^3 \text {arctanh}\left (\sqrt {1-c^2 x^2}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.417, Rules used = {4723, 272, 44, 65, 214} \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=-\frac {a+b \arcsin (c x)}{3 x^3}-\frac {1}{6} b c^3 \text {arctanh}\left (\sqrt {1-c^2 x^2}\right )-\frac {b c \sqrt {1-c^2 x^2}}{6 x^2} \]
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Rule 44
Rule 65
Rule 214
Rule 272
Rule 4723
Rubi steps \begin{align*} \text {integral}& = -\frac {a+b \arcsin (c x)}{3 x^3}+\frac {1}{3} (b c) \int \frac {1}{x^3 \sqrt {1-c^2 x^2}} \, dx \\ & = -\frac {a+b \arcsin (c x)}{3 x^3}+\frac {1}{6} (b c) \text {Subst}\left (\int \frac {1}{x^2 \sqrt {1-c^2 x}} \, dx,x,x^2\right ) \\ & = -\frac {b c \sqrt {1-c^2 x^2}}{6 x^2}-\frac {a+b \arcsin (c x)}{3 x^3}+\frac {1}{12} \left (b c^3\right ) \text {Subst}\left (\int \frac {1}{x \sqrt {1-c^2 x}} \, dx,x,x^2\right ) \\ & = -\frac {b c \sqrt {1-c^2 x^2}}{6 x^2}-\frac {a+b \arcsin (c x)}{3 x^3}-\frac {1}{6} (b c) \text {Subst}\left (\int \frac {1}{\frac {1}{c^2}-\frac {x^2}{c^2}} \, dx,x,\sqrt {1-c^2 x^2}\right ) \\ & = -\frac {b c \sqrt {1-c^2 x^2}}{6 x^2}-\frac {a+b \arcsin (c x)}{3 x^3}-\frac {1}{6} b c^3 \text {arctanh}\left (\sqrt {1-c^2 x^2}\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.08 \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=-\frac {a}{3 x^3}-\frac {b c \sqrt {1-c^2 x^2}}{6 x^2}-\frac {b \arcsin (c x)}{3 x^3}-\frac {1}{6} b c^3 \text {arctanh}\left (\sqrt {1-c^2 x^2}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 61, normalized size of antiderivative = 0.98
method | result | size |
parts | \(-\frac {a}{3 x^{3}}+b \,c^{3} \left (-\frac {\arcsin \left (c x \right )}{3 c^{3} x^{3}}-\frac {\sqrt {-c^{2} x^{2}+1}}{6 c^{2} x^{2}}-\frac {\operatorname {arctanh}\left (\frac {1}{\sqrt {-c^{2} x^{2}+1}}\right )}{6}\right )\) | \(61\) |
derivativedivides | \(c^{3} \left (-\frac {a}{3 c^{3} x^{3}}+b \left (-\frac {\arcsin \left (c x \right )}{3 c^{3} x^{3}}-\frac {\sqrt {-c^{2} x^{2}+1}}{6 c^{2} x^{2}}-\frac {\operatorname {arctanh}\left (\frac {1}{\sqrt {-c^{2} x^{2}+1}}\right )}{6}\right )\right )\) | \(65\) |
default | \(c^{3} \left (-\frac {a}{3 c^{3} x^{3}}+b \left (-\frac {\arcsin \left (c x \right )}{3 c^{3} x^{3}}-\frac {\sqrt {-c^{2} x^{2}+1}}{6 c^{2} x^{2}}-\frac {\operatorname {arctanh}\left (\frac {1}{\sqrt {-c^{2} x^{2}+1}}\right )}{6}\right )\right )\) | \(65\) |
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Time = 0.28 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.29 \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=-\frac {b c^{3} x^{3} \log \left (\sqrt {-c^{2} x^{2} + 1} + 1\right ) - b c^{3} x^{3} \log \left (\sqrt {-c^{2} x^{2} + 1} - 1\right ) + 2 \, \sqrt {-c^{2} x^{2} + 1} b c x + 4 \, b \arcsin \left (c x\right ) + 4 \, a}{12 \, x^{3}} \]
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Time = 1.56 (sec) , antiderivative size = 117, normalized size of antiderivative = 1.89 \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=- \frac {a}{3 x^{3}} + \frac {b c \left (\begin {cases} - \frac {c^{2} \operatorname {acosh}{\left (\frac {1}{c x} \right )}}{2} + \frac {c}{2 x \sqrt {-1 + \frac {1}{c^{2} x^{2}}}} - \frac {1}{2 c x^{3} \sqrt {-1 + \frac {1}{c^{2} x^{2}}}} & \text {for}\: \frac {1}{\left |{c^{2} x^{2}}\right |} > 1 \\\frac {i c^{2} \operatorname {asin}{\left (\frac {1}{c x} \right )}}{2} - \frac {i c \sqrt {1 - \frac {1}{c^{2} x^{2}}}}{2 x} & \text {otherwise} \end {cases}\right )}{3} - \frac {b \operatorname {asin}{\left (c x \right )}}{3 x^{3}} \]
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Time = 0.31 (sec) , antiderivative size = 69, normalized size of antiderivative = 1.11 \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=-\frac {1}{6} \, {\left ({\left (c^{2} \log \left (\frac {2 \, \sqrt {-c^{2} x^{2} + 1}}{{\left | x \right |}} + \frac {2}{{\left | x \right |}}\right ) + \frac {\sqrt {-c^{2} x^{2} + 1}}{x^{2}}\right )} c + \frac {2 \, \arcsin \left (c x\right )}{x^{3}}\right )} b - \frac {a}{3 \, x^{3}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 284 vs. \(2 (52) = 104\).
Time = 0.44 (sec) , antiderivative size = 284, normalized size of antiderivative = 4.58 \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=-\frac {b c^{6} x^{3} \arcsin \left (c x\right )}{24 \, {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}^{3}} - \frac {a c^{6} x^{3}}{24 \, {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}^{3}} + \frac {b c^{5} x^{2}}{24 \, {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}^{2}} - \frac {b c^{4} x \arcsin \left (c x\right )}{8 \, {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}} - \frac {a c^{4} x}{8 \, {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}} + \frac {1}{6} \, b c^{3} \log \left ({\left | c \right |} {\left | x \right |}\right ) - \frac {1}{6} \, b c^{3} \log \left (\sqrt {-c^{2} x^{2} + 1} + 1\right ) - \frac {b c^{2} {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )} \arcsin \left (c x\right )}{8 \, x} - \frac {a c^{2} {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}}{8 \, x} - \frac {b c {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}^{2}}{24 \, x^{2}} - \frac {b {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}^{3} \arcsin \left (c x\right )}{24 \, x^{3}} - \frac {a {\left (\sqrt {-c^{2} x^{2} + 1} + 1\right )}^{3}}{24 \, x^{3}} \]
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Timed out. \[ \int \frac {a+b \arcsin (c x)}{x^4} \, dx=\int \frac {a+b\,\mathrm {asin}\left (c\,x\right )}{x^4} \,d x \]
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