Let f: ER be a continuous function. If I = (a, b) is an open interval in R show that for every point in the preimage f−¹
Posted: Wed Jul 06, 2022 11:54 am
Let f: ER be a continuous function. If I = (a, b) is an open interval in R show that for every point in the preimage f−¹(1), there is an open interval J = (c,d) such that x = J and f(JnE) CI.