in this article, by using chebyshev’s polynomials and chebyshev’s expansion, we obtain the best uniform polynomial approximation out of p2n to a class of rational functions of the form (ax2+c)-1 on any non symmetric interval [d,e]. using the obtained approximation, we provide the best uniform polynomial approximation to a class of rational functions of the form (ax2+bx+c)-1 for both cases b2-4a...

Entre los coleópteros de importancia agrícola sobresale la familia Curculionidae, y entre éstos, el picudo Macrocopturus aguacatae Kissinger, está reconocido como una plaga que barrena las ramas del aguacate (Persea americana Mill.) El objetivo presente estudio fue evaluar preferencia alimentación en condiciones laboratorio. Para M. se probaron 23 variedades utilizando 2.0 a 2.5 cm diámetro 30 ...

in this work we deal with the question: how can one improve the approximation level for some nonlinear integral equations? good candidates for this aim are semi orthogonal b-spline scaling functions and their duals. although there are different works in this area, only b-spline of degree at most 2 are used for this approximation. here we compute b-spline scaling functions of degree 4 and their ...

Higher order likelihood methods lead to an easily implemented and highly accurate approximation to both joint and marginal posterior distributions. This makes it quite straightforward to assess the influence of the prior, and to assess the effect of changing priors, on the posterior quantiles. We discuss this in the light of some simple examples that illustrate in concrete form the potential fo...