7. The convolution of two signals of time duration and results in a signal with time duration a. b. c. d. 8. A linear system must satisfy a. Time-invariance b. Causality c. Stability d. Scaling (homogeneity) and Additivity properties 9. The zero-input response of the system is the output obtained when the is zero. a. Initial condition b. Input c. Temperature d. Impulse response 10. The total response of the LTI system is the sum of a. Zero-input and Zero-state response b. Convolution and Fourier Series c. Nonlinear terms d. Periodic components