I am just a little confused by this question, since I understand the concepts but do not know how to work with the variables given. Thank you!

3. {We reeaJl that m I} e2 is an increasing, positive function.) {a} Let a, b be two real numbers with a f: b. Justify that for any e in [(1, b] we have 6156:5125. {b} Using the mean value theorem, prove that [b we\" 5 sh e\" i: [b Elbe"