(i) (3 pts.) What is the fundamental period of each sinusoid? (ii) (4 pts.) Use MATLAB to generate separate plots of x[n] and y[n] for n = 0, . . . , 111. (iii) (3 pts.) If Nx and Ny are the two fundamental periods found in part (i), show that u[n] = x[n] + y[n] is also periodic with period Nu = Nx

Acomputer has a two-level cache. suppose that 60% of the memory references hit on the first level cache, 35% hit on the second level, and 5% miss. the access times are 5 nsec, 15 nsec, and 60 nsec, respectively, where the times for the level 2 cache and memory start counting at the moment it is known that they are needed (e. g., a level 2 cache access does not even start until the level 1 cache miss occurs). what is the average access time?