Abstract
Two-side inequalities for the modified Bessel functionI v(x), Kv(x) of the first and third kind and of order v, are established. The chief tool is the monotonocity of the functionsI v+1(x)/I v(x),K v+1(x)/K v(x).
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Ifantis, E.K., Siafarikas, P.D. Bounds for modified bessel functions. Rend. Circ. Mat. Palermo 40, 347–356 (1991). https://doi.org/10.1007/BF02845073
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DOI: https://doi.org/10.1007/BF02845073