The aim of this paper is to continue the investigation of the second author started in , where a weighted version of a
classical result of P. Erdős was proved using Freud type weights. We shall show that an analogous statement is true for weighted
interpolation if we consider exponential weights on [-1,1].
The aim of this paper is to give weighted function spaces in which the sequence of Cesàro means of the Jacobi-Fourier series
are uniformly convergent. Error estimate for the approximation will also be considered.