Find l∞ and l2 norms of the vectors.
a. x = (3,−4, 0, 3/2 )t
b. x = (2, 1,−3, 4)t
c. x = (sin k, cos k, 2k)t for a fixed positive integer k
d. x = (4/(k + 1), 2/k2, k2e−k)t for a fixed positive integer k