1.

A fuzzy set A on R is ................. iff A(λx1 + (1 – λ)x2) ≥ min [A(x1), A(x2)] for all x1, x2 ∈ R and all λ ∈ [0, 1], where min denotes the minimum operator.

A. Support
B. α-cut
C. Convex
D. Concave
Answer» D. Concave


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