Question

the constant function & identity function

Answer 1

the limit of a constant is that constant

Answer 2

\[\lim_{x \rightarrow a}(k)=k\]

examples:
\[\lim_{x \rightarrow 3}(2) = 2\]
\[\lim_{x \rightarrow 4}(7)=7\]

the limit of a constant is THAT constant, it does not matter what value the limit approaches.