Optimal. Leaf size=128 \[ -\frac {4 b (-i a-i b x+1)^{1+\frac {i n}{2}} (i a+i b x+1)^{-1-\frac {i n}{2}} \, _2F_1\left (2,\frac {i n}{2}+1;\frac {i n}{2}+2;\frac {(i-a) (-i a-i b x+1)}{(a+i) (i a+i b x+1)}\right )}{(a+i)^2 (-n+2 i)} \]
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Rubi [A] time = 0.04, antiderivative size = 128, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {5095, 131} \[ -\frac {4 b (-i a-i b x+1)^{1+\frac {i n}{2}} (i a+i b x+1)^{-1-\frac {i n}{2}} \, _2F_1\left (2,\frac {i n}{2}+1;\frac {i n}{2}+2;\frac {(i-a) (-i a-i b x+1)}{(a+i) (i a+i b x+1)}\right )}{(a+i)^2 (-n+2 i)} \]
Antiderivative was successfully verified.
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Rule 131
Rule 5095
Rubi steps
\begin {align*} \int \frac {e^{n \tan ^{-1}(a+b x)}}{x^2} \, dx &=\int \frac {(1-i a-i b x)^{\frac {i n}{2}} (1+i a+i b x)^{-\frac {i n}{2}}}{x^2} \, dx\\ &=-\frac {4 b (1-i a-i b x)^{1+\frac {i n}{2}} (1+i a+i b x)^{-1-\frac {i n}{2}} \, _2F_1\left (2,1+\frac {i n}{2};2+\frac {i n}{2};\frac {(i-a) (1-i a-i b x)}{(i+a) (1+i a+i b x)}\right )}{(i+a)^2 (2 i-n)}\\ \end {align*}
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Mathematica [A] time = 0.03, size = 125, normalized size = 0.98 \[ -\frac {4 i b (i a+i b x+1)^{-\frac {i n}{2}} (-i (a+b x+i))^{1+\frac {i n}{2}} \, _2F_1\left (2,\frac {i n}{2}+1;\frac {i n}{2}+2;\frac {a^2+b x a-i b x+1}{a^2+b x a+i b x+1}\right )}{(a+i)^2 (n-2 i) (a+b x-i)} \]
Antiderivative was successfully verified.
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fricas [F] time = 0.49, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {e^{\left (n \arctan \left (b x + a\right )\right )}}{x^{2}}, x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [F] time = 0.10, size = 0, normalized size = 0.00 \[ \int \frac {{\mathrm e}^{n \arctan \left (b x +a \right )}}{x^{2}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {e^{\left (n \arctan \left (b x + a\right )\right )}}{x^{2}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int \frac {{\mathrm {e}}^{n\,\mathrm {atan}\left (a+b\,x\right )}}{x^2} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {e^{n \operatorname {atan}{\left (a + b x \right )}}}{x^{2}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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