MCQOPTIONS
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MCQOPTIONS
| 1. |
The impulse response h(t) of a linear time-invariant continuous time system is described by h(t) = exp (at) u(t) + exp (βt) u (- t), where u(t) denotes the unit step function, and a and β are constants. This system is stable if |
| A. | a is positive and β is positive |
| B. | a is negative and β is negative |
| C. | a is positive and β is negative |
| D. | a is negative and β is positive |
| Answer» E. | |