The object in this paper is to consider the problem of existence,uniqueness,explicil representation of(0,2)-interpolation on the zeros of(1-x<sup>2</sup>)P<sup><</s
A sufficient condition for the order of approximation of a continuous 2π periodic function with a givenmajorant for the modulus of continuity by the [F, d_n] m
Suppose that we want to approximate fC[0,1]by polynomials in P<sub>n</sub>,using only itsvalues on X<sub>n</sub>={i/n,0≤i≤n}.This can be done by the Lagrange