Consider the following. (If an answer does not exist, enter DNE.) x) = ln(2 + sin{X)). 5 x :5 2:: Find the interval(s) on which 1' is concave up. [Enter your answer using interval notation.) E Find the interval(s) on which 1" is concave down. {Enter your answer using interval notation.) E Find the inection points of f. smallerxvalue (x, y} = (:l ) larger x-value (x, y) = (E ) Need Help? _