We now understand two-step improper integrals: those that can be broken into two one-step improper integrals. In general, an improper integral \(\int_a^b f(x)\,dx\) should be broken into \(N\) one-step improper integrals (each individually evaluated as the limit of a definite integral), where \(N\) is the sum of the number of infinite endpoints, the number of finite endpoint infinite singularities, and twice the number of (finite) interior infinite singularities.