Incorrect Question 4 0 / 1 pts When we compute a differential for a function f(x), it means that we are trying to find df, which is equivalent to f' (x) dx. What is the differential dif of f(x) = x3 -x? O df = dr O df = (x3 - x)da O df = (3:2 - 1) de O df = 3x2 dx O none of the above Incorrect Question 5 0 / 1 pts What is the differential df of f(x) = x3 - x at the point a = 1? O df = dr O df = 2dr O df = 3 dr O df = (32 - 1) dx O none of the above Quiz Score: 0 out of 5