Forcing function in differential equation of order n

Q.  Consider the mathematical representation of nth order differential equation given below. What does the notation v(t) indicate in it?

a0 (dn i/dtn) + a1 (dn -1 i /dtn-1) + …... +a n-1 (di / dt) + an i = v(t)
- Published on 06 Oct 15

a. Independent variable
b. Input or forcing function
c. Excitation
d. All of the above

ANSWER: All of the above

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