Integrand size = 20, antiderivative size = 44 \[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\frac {a (e x)^n}{e n}+\frac {b x^{-n} (e x)^n \text {arctanh}\left (\sin \left (c+d x^n\right )\right )}{d e n} \]
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Time = 0.06 (sec) , antiderivative size = 44, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {14, 4293, 4289, 3855} \[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\frac {a (e x)^n}{e n}+\frac {b x^{-n} (e x)^n \text {arctanh}\left (\sin \left (c+d x^n\right )\right )}{d e n} \]
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Rule 14
Rule 3855
Rule 4289
Rule 4293
Rubi steps \begin{align*} \text {integral}& = \int \left (a (e x)^{-1+n}+b (e x)^{-1+n} \sec \left (c+d x^n\right )\right ) \, dx \\ & = \frac {a (e x)^n}{e n}+b \int (e x)^{-1+n} \sec \left (c+d x^n\right ) \, dx \\ & = \frac {a (e x)^n}{e n}+\frac {\left (b x^{-n} (e x)^n\right ) \int x^{-1+n} \sec \left (c+d x^n\right ) \, dx}{e} \\ & = \frac {a (e x)^n}{e n}+\frac {\left (b x^{-n} (e x)^n\right ) \text {Subst}\left (\int \sec (c+d x) \, dx,x,x^n\right )}{e n} \\ & = \frac {a (e x)^n}{e n}+\frac {b x^{-n} (e x)^n \text {arctanh}\left (\sin \left (c+d x^n\right )\right )}{d e n} \\ \end{align*}
Time = 0.11 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.86 \[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\frac {x^{-n} (e x)^n \left (a d x^n+b \text {arctanh}\left (\sin \left (c+d x^n\right )\right )\right )}{d e n} \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 0.98 (sec) , antiderivative size = 159, normalized size of antiderivative = 3.61
method | result | size |
risch | \(\frac {a x \,{\mathrm e}^{\frac {\left (-1+n \right ) \left (-i \pi \,\operatorname {csgn}\left (i e \right ) \operatorname {csgn}\left (i x \right ) \operatorname {csgn}\left (i e x \right )+i \pi \,\operatorname {csgn}\left (i e \right ) \operatorname {csgn}\left (i e x \right )^{2}+i \pi \,\operatorname {csgn}\left (i x \right ) \operatorname {csgn}\left (i e x \right )^{2}-i \pi \operatorname {csgn}\left (i e x \right )^{3}+2 \ln \left (x \right )+2 \ln \left (e \right )\right )}{2}}}{n}-\frac {2 i \arctan \left ({\mathrm e}^{i \left (c +d \,x^{n}\right )}\right ) e^{n} b \,{\mathrm e}^{\frac {i \pi \,\operatorname {csgn}\left (i e x \right ) \left (-1+n \right ) \left (\operatorname {csgn}\left (i e x \right )-\operatorname {csgn}\left (i x \right )\right ) \left (-\operatorname {csgn}\left (i e x \right )+\operatorname {csgn}\left (i e \right )\right )}{2}}}{d e n}\) | \(159\) |
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none
Time = 0.30 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.36 \[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\frac {2 \, a d e^{n - 1} x^{n} + b e^{n - 1} \log \left (\sin \left (d x^{n} + c\right ) + 1\right ) - b e^{n - 1} \log \left (-\sin \left (d x^{n} + c\right ) + 1\right )}{2 \, d n} \]
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\[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\int \left (e x\right )^{n - 1} \left (a + b \sec {\left (c + d x^{n} \right )}\right )\, dx \]
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\[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\int { {\left (b \sec \left (d x^{n} + c\right ) + a\right )} \left (e x\right )^{n - 1} \,d x } \]
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\[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\int { {\left (b \sec \left (d x^{n} + c\right ) + a\right )} \left (e x\right )^{n - 1} \,d x } \]
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Time = 14.72 (sec) , antiderivative size = 104, normalized size of antiderivative = 2.36 \[ \int (e x)^{-1+n} \left (a+b \sec \left (c+d x^n\right )\right ) \, dx=\frac {{\left (e\,x\right )}^n\,\left (b\,\ln \left (-b\,{\left (e\,x\right )}^{n-1}\,2{}\mathrm {i}-2\,b\,{\mathrm {e}}^{c\,1{}\mathrm {i}}\,{\mathrm {e}}^{d\,x^n\,1{}\mathrm {i}}\,{\left (e\,x\right )}^{n-1}\right )-b\,\ln \left (b\,{\left (e\,x\right )}^{n-1}\,2{}\mathrm {i}-2\,b\,{\mathrm {e}}^{c\,1{}\mathrm {i}}\,{\mathrm {e}}^{d\,x^n\,1{}\mathrm {i}}\,{\left (e\,x\right )}^{n-1}\right )+a\,d\,x^n\right )}{d\,e\,n\,x^n} \]
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