 The duration of state 1 (low output) will be related to the time constant "R"2"C"1 as it depends on the charging of C1, and the duration of state 2 (high output) will be related to the time constant "R"3"C"2 as it depends on the charging of C2.Because they do not need to be the same, an asymmetric duty cycle is easily achieved.The voltage on a capacitor with non-zero initial charge is