Determine whether the following define norms on C[a, b]. (a) ||f|| = |f(a)| + |f(b)| (b) |f|| = ba |f(x)| dx (c) 11 maxlf(x)|

Determine whether the following define norms on C[a, b].
(a) ||f|| = |f(a)| + |f(b)|
(b) |f|| = ˆ«ba |f(x)| dx
(c)

11 maxlf(x)|