3. (a) Show that all of the truth functions (on {0, 1}) can be defined in terms of {1}, i.e. that this is a functionally complete set of connectives. (b) Show that {,V,^} is not a functionally complete set of connec- tives. (c) Conclude that {,V,A,, T} is not a functionally complete set of connectives. (Hint: define the last two in terms of the others.)