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Results tagged with approximation-theory
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user 64177
Approximation theory is concerned with how functions can best be approximated with simpler functions, and with quantitatively characterizing the errors introduced thereby.
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Is there a way to get the closed form approximate result of $\int_ 0^a\frac {e^{-x - \frac {... [closed]
It is known that
$$\int_ 0^{\infty}\frac {e^{-x - \frac {1} {x}}} {x} dx=2 K_0(2),$$ but now I want to get the closed form approximate result of
$$\int_ 0^a\frac {e^{-x - \frac {1} {x}}} {x} dx.$$
I …
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