TY  - JOUR
AU  - Abdelhamid, Dina
AU  - Albalawi, Wedad
AU  - Nisar, Kottakkaran Sooppy
AU  - Abdel-Aty, A.
AU  - Alsaeed, Suliman
AU  - Abdelhakem, M.
PY  - 2023
TI  - Mixed Chebyshev and Legendre polynomials differentiation matrices for solving initial-boundary value problems
JO  - AIMS Mathematics
SP  - 24609
EP  - 24631
VL  - 8
IS  - 10
AB  - A new form of basis functions structures has been constructed. These basis functions constitute a mix of Chebyshev polynomials and Legendre polynomials. The main purpose of these structures is to present several forms of differentiation matrices. These matrices were built from the perspective of pseudospectral approximation. Also, an investigation of the error analysis for the proposed expansion has been done. Then, we showed the presented matrices' efficiency and accuracy with several test functions. Consequently, the correctness of our matrices is demonstrated by solving ordinary differential equations and some initial boundary value problems. Finally, some comparisons between the presented approximations, exact solutions, and other methods ensured the efficiency and accuracy of the proposed matrices.
UR  - https://doi.org/10.3934/math.20231255
DO  - 10.3934/math.20231255