Fermi function. (a) under equilibrium conditions, (i) what is the probability of an electron state being occupied if it is located at the fermi level? at t = 0 k, what is the probability of an electron state being occupied if it located (ii) above the fermi level (iii) below the fermi level (b) plot fermi function for ef=0.5 ev and show the probability of an occupied state δe above ef is equal to the probability of an empty state δe below ef so f(ef +δe) = 1 - f(ef -δe). (c) if the probability of a state being empty at ev - 1kt is equal to the probability of a state being filled at ev - 4kt, where is the fermi level located? (d) if ef is positioned at ec, determine the probability of finding electrons in states ec+3kt (a numerical answer is required). repeat your calculation for the case when ef is positioned at ev and the energy level is located at ev-3kt