Find the unit function that is a constant multiple of the function f(x) = .v - 4

Question:

Find the unit function that is a constant multiple of the function f(x) = .v - 4 with respect to the
(a) L1 norm on 10, 1 ]
(b) L2 norm on [ 0. 1 ]
(c) L∞ norm on [0. 1 ]
(d) L1 norm on [ - 1. 1 ]
(e) L2 norm on [ - 1. 1 ]
(f) L∞ norm on [ - 1. 1 ]