Additive External Input Add input Apply a relatively constant numeral input to a neuron. ● Xi=-Xi+li (3-13) solution x()=x;(0)et+I(1-et) (3-14)Additive External Input Add input Apply a relatively constant numeral input to a neuron. i i xi = -x + I • solution x (t) x (0)e I (1- e ) -t i -t i = i + (3-13) (3-14)