Comprehensive Interpretation of a Three-Point Gauss Quadrature with Variable Sampling Points and Its Application to Integration for Discrete Data

Table 3

𝑎−2	𝑎−1	𝑎0	𝑎1	𝑎2
(−1+√0.6)/12	(8−4√0.6)/12	(10+6√0.6)/12	(8−4√0.6)/12	(−1+√0.6)/12
−0.018783611	0.40846778	1.2206317	0.40846778	−0.018783611