Integrand size = 21, antiderivative size = 53 \[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=-\frac {F^{a+b (c+d x)^3}}{3 d (c+d x)^3}+\frac {b F^a \operatorname {ExpIntegralEi}\left (b (c+d x)^3 \log (F)\right ) \log (F)}{3 d} \]
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Time = 0.10 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.095, Rules used = {2245, 2241} \[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=\frac {b F^a \log (F) \operatorname {ExpIntegralEi}\left (b (c+d x)^3 \log (F)\right )}{3 d}-\frac {F^{a+b (c+d x)^3}}{3 d (c+d x)^3} \]
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Rule 2241
Rule 2245
Rubi steps \begin{align*} \text {integral}& = -\frac {F^{a+b (c+d x)^3}}{3 d (c+d x)^3}+(b \log (F)) \int \frac {F^{a+b (c+d x)^3}}{c+d x} \, dx \\ & = -\frac {F^{a+b (c+d x)^3}}{3 d (c+d x)^3}+\frac {b F^a \text {Ei}\left (b (c+d x)^3 \log (F)\right ) \log (F)}{3 d} \\ \end{align*}
Time = 0.20 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.89 \[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=\frac {F^a \left (-\frac {F^{b (c+d x)^3}}{(c+d x)^3}+b \operatorname {ExpIntegralEi}\left (b (c+d x)^3 \log (F)\right ) \log (F)\right )}{3 d} \]
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\[\int \frac {F^{a +b \left (d x +c \right )^{3}}}{\left (d x +c \right )^{4}}d x\]
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Leaf count of result is larger than twice the leaf count of optimal. 147 vs. \(2 (49) = 98\).
Time = 0.27 (sec) , antiderivative size = 147, normalized size of antiderivative = 2.77 \[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=\frac {{\left (b d^{3} x^{3} + 3 \, b c d^{2} x^{2} + 3 \, b c^{2} d x + b c^{3}\right )} F^{a} {\rm Ei}\left ({\left (b d^{3} x^{3} + 3 \, b c d^{2} x^{2} + 3 \, b c^{2} d x + b c^{3}\right )} \log \left (F\right )\right ) \log \left (F\right ) - F^{b d^{3} x^{3} + 3 \, b c d^{2} x^{2} + 3 \, b c^{2} d x + b c^{3} + a}}{3 \, {\left (d^{4} x^{3} + 3 \, c d^{3} x^{2} + 3 \, c^{2} d^{2} x + c^{3} d\right )}} \]
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\[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=\int \frac {F^{a + b \left (c + d x\right )^{3}}}{\left (c + d x\right )^{4}}\, dx \]
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\[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=\int { \frac {F^{{\left (d x + c\right )}^{3} b + a}}{{\left (d x + c\right )}^{4}} \,d x } \]
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\[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=\int { \frac {F^{{\left (d x + c\right )}^{3} b + a}}{{\left (d x + c\right )}^{4}} \,d x } \]
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Time = 0.62 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.96 \[ \int \frac {F^{a+b (c+d x)^3}}{(c+d x)^4} \, dx=-\frac {F^a\,\left (F^{b\,{\left (c+d\,x\right )}^3}+b\,\ln \left (F\right )\,\mathrm {expint}\left (-b\,\ln \left (F\right )\,{\left (c+d\,x\right )}^3\right )\,{\left (c+d\,x\right )}^3\right )}{3\,d\,{\left (c+d\,x\right )}^3} \]
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