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Unformatted text preview: EE102: SPRING 09 A GUIDE TO FINAL EXAMINATION PREPARATION: THINGS ONE OUGHT TO KNOW 1 1. Systems : L, TV, TI, C, NC. 2. Delta and Unit Step Functions : Always ask : where does a delta function sit? Know how to differentiate f ( t ) U ( t ). Should know that f ( t ) δ ( t ) = f (0) δ ( t ). Should know how to handle integrals containing delta and unit step functions. 3. Linear Systems : (i) IRF h ( t,τ )? (ii) System is LTI: h ( t,τ ) = h ( t − τ ))? (iii) System is LC: IRF is of the form h ( t,τ ) U ( t − τ )? (iv) System is LTIC: h ( t,τ ) is of the form h ( t − τ ) U ( t − τ )? BIG THEOREM : Input-Output Relation of a Linear System: (Super- position Integral)? Should know how to “lift” the IRF out of an input-output relation of a Linear System. Special Cases of BT: If system is Causal then what? If system is TI, Causal, and x ( t ) = 0 for t < 0, then what? (Convolution Integral)....
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- Spring '09
- IRF, unit step functions