梯形模糊数

隶属度函数

$\tilde{1}$

$\left(1,1,\frac{3}{2},2\right)$

$\tilde{x}$

$\left(x-1,x-\frac{1}{2},x+\frac{1}{2},x+1\right)\text{for}x=2,3,4,5,6,7,8$

$\tilde{9}$

$\left(8,\frac{17}{2},9,9\right)$