The general theory of linear differential equations consists of the complementary function (CF) and the particular solution (PS). The electrical circuit solutions in the time domain are classified as the natural response (NR) and forced response (FR). They can be related as:
1
CF = FR and PS = NR
2
CF ≠ FR and PS = NR
3
CF = NR and PS = FR
4
There is no relation between the four terms