For α≥β≥ -1/2 let Δ(x) = (2shx)2α+1(2chx)2β+1 denote the weight function on R+ and L1(Δ) the space of integrable functions on R+ with respect to Δ(x)dx
The (Nrlund) logarithmic means of the Fourier series is:t_nf =1/l_n (sum from k=1 to n-1) S_kf/n-k, where l_n =(sum from k=1 to n-1) 1/k . In general, the Fej
We obtain a deficient cubic spline function which matches the functions with certain area matching over a greater mesh intervals, and also provides a greater fl