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1. |
Determine the impulse response for the cascade of two LTI systems having impulse responses h1(n)= (( frac{1}{2})^2 ) u(n) and h2(n)= (( frac{1}{4})^2 ) u(n). |
A. | (( frac{1}{2})^n[2-( frac{1}{2})^n] ), n<0 |
B. | (( frac{1}{2})^n[2-( frac{1}{2})^n] ), n>0 |
C. | (( frac{1}{2})^n[2+( frac{1}{2})^n] ), n<0 |
D. | (( frac{1}{2})^n[2+( frac{1}{2})^n] ), n>0 |
Answer» C. (( frac{1}{2})^n[2+( frac{1}{2})^n] ), n<0 | |