Fuzzy logic membership functions

2. Let R1 and R2 be discrete fuzzy sets on the universes XxY and YxZ respectively. Their membership functions are described by the following matrices: r0.5 0.7 0.21 R1 = 0.6 0.4 0.8 CXXY 0.4 0.9 0.5 L0.2 1.0 0.3 10.2 1.0 0.47 and R2 = 10.7 0.3 0.6 SY X Z L0.4 0.9 0.3) Calculate the membership function of the fuzzy set R=R1R2 described as a matrix by use the max-min composition