Fourier-Laguerre Expansion of Signals by Composite Summable Technique

Finding approximate Fourier-Laguerre series signals has been interest to a lot of researchers. Numerous studies investigated the Fourier-Laguerre signal’s approximation employing individual means. Additionally, some researchers sought to approximate Fourier-Laguerre series signals using double product summability. In the present work, we proposed the error estimation of functon belonging to \(L[0,\infty )\) -class by \((H,1)(E,\theta )(E,\theta )\) composite means using its Fourier-Laguerre series at point y = 0. We also introduced the approximation theorem using composite summability along with some graphical interpretations.