Q4.4 don't know how to do, need help, Thank you

3. Use the three defuzzification strategies in Equations (4.1), (4.2), and (4.3) to find the representative values of a fuzzy set A defined by MA(I) = trapezoid(1, 10, 30, 50,90). 4. Repeat the previous exercise, but assume that the universe of discourse X contains integers from 0 to 100. Centroid of area ZCOA -COA = JZ MA()z dz (4.1) Tz MA(z) dz' where ya(z) is the aggregated output MF. This is the most widely adopted defuzzification strategy, which is reminiscent of the calculation of expected values of probability distributions. Bisector of area