The zero-input response of a series RLC circuit with R 80 V is vCt 2e2000tcos1000t

The zero-input response of a series RLC circuit with R ¼

80 V is vCðtÞ ¼ 2e2000tcosð1000tÞ  4e2000tsinð1000tÞ V t  0 If the initial conditions remain the same, what is the zero-input response when R ¼ 40 V?