4 er-e Use u-substitution to determine the approximate value of J dx. Show all work. For an indefinite integral, use the notation INT in place of the symbol. For example, S(* + 1) dx should be written as INT (x + 1) dc. For a definite integral, use the notation INT (a, b). For example, S, (x + 1) da should be written as INT (1, 2) (2 + 1) dc. For a definite integral that has been integrated, use the 2 notation EVAL (a, b). For example, 2 should be written as 1 2 + x EVAL (1, 2)