Question

In digital signal processing. with explanation tnx will up

15. Is the function y[n]-x[n-1]-x[n-56] causal? a. The system is non causal b. The system is causal >» c. Both causal and noncausal d. None of the above 16. Is the function y[n]x[n] stable in nature? a. It is stable - b. It is unstable c. Both stable and unstable d. None of the above 17. We define y[n] = nx[n]-(n-Dx[n]. Now, z[n] = z[n-1] + y[n]. Is z[n] a a. It is causal - b, It is non-causal system? c. Both causal and non-causal d. None of the above 18. Is the function yln]xIn-1]-x[n-56l causal:? b.The system is causal - c. Both causal and noncausal d. None of the above C 19. Which one most appropriate dynamic system a. y(n) + y(n- 1) b. y(n)-x(n) c. yn) + y(n 1) y(n1) d. y(n) +y(n 1) y(n 3) 0 20. Which one is a linear system? a. y[n]-x[n] xx[n-1) b. y[n]-x[n] +x[n-10] c. y[n] = x2[n] d. all of the above r 21. Which of the following systems is linear? a, y(t) = sin(x(t)) b. y(t) log(x(t)) c. y(t) cos(x(t))- d. y(t) dx(t)/dt C 22, Which of the following systems is memoryless? a. y(t)-x(2t)+x() b. y()x)+ 2x(t) c. y(t)--x(t) + x( 1-t) d. y(t)x(t) 2x(t+2) 3/5

Answer 1