Composite Gauss-Legendre Formulas for Solving Fuzzy Integration

Table 2

Numerical solutions and errors between different methods (ℎ=0.5).

Methods	Numerical solution	Error
Trapezoidal formula	0.64523519(−1+𝑟,1−𝑟)	0.01311464
Simpson formula	0.63213418(−1+𝑟,1−𝑟)	0.00001363
Two-point Gauss-L	0.63211148(−1+𝑟,1−𝑟)	0.00000877
Three-point Gauss-L	0.63212055(−1+𝑟,1−𝑟)	0.00000000