What is the second difference that is used to replace the second order derivate of y(t)?
A. [y(n)-2y(n-1)+y(n-2)]/T
B. [y(n)-2y(n-1)+y(n-2)]/T2
C. [y(n)+2y(n-1)+y(n-2)]/T
D. [y(n)+2y(n-1)+y(n-2)]/T2
Answer:A
What is the second difference that is used to replace the second order derivate of y(t)?
A. [y(n)-2y(n-1)+y(n-2)]/T B. [y(n)-2y(n-1)+y(n-2)]/T2 C. [y(n)+2y(n-1)+y(n-2)]/T D. [y(n)+2y(n-1)+y(n-2)]/T2