Given a unit step function u (t), its time-derivative is:
A. A unit impulse
B. Another step function
C. A unit ramp function
D. A sine function
Answer:A
Given a unit step function u (t), its time-derivative is:
A. A unit impulse B. Another step function C. A unit ramp function D. A sine function
Explanation: Unit step function is one of the test signals and for the basic standard signals they are interrelated as the function of differentiation and integration as unit step function is the integral of impulse function.