(a) By taking a limit, show that h(n)=2e2nen+ln(n)+n2 satisfies hO(e2n) as n. (b) When we write the expression limnf(n)=L, this really means that "we can force f(n) to be as close to L as we like, provided we take n sufficiently large". Write MATLAB code that takes as input a function f, a limit L, and an error threshold err, and returns the first positive integer n for which f(n)L