# Consider the assertions given below

A : CDF is a monotonously increasing function

B : PDF is a derivative of CDF & is always positive

Which among them is correct according to the properties of PDF?

A. A is true & B is false

B. A is false & B is true

C. Both A & B are true but B is a reason for A

D. Both A & B are false since B is not a reason for A

A. Replication

B. Sampling

C. Scaling

D. Product

A. a > 1

B. 0 < a < 1

C. a < -1

D. -1 < a < 0

A. sinusoid signals multiplied by growing exponentials

B. sinusoid signals divided by growing exponentials

C. sinusoid signals multiplied by decaying exponentials

D. sinusoid signals divided by decaying exponentials

A. Decreases with an increase in the magnitude of an independent variable (x)

B. Increases with an increase in the magnitude of an independent variable (x)

C. Always remains constant irrespective of variation in magnitude of 'x'

D. Cannot be defined

**A system is said to be shift invariant only if______**

A. a shift in the input signal also results in the corresponding shift in the output

B. a shift in the input signal does not exhibit the corresponding shift in the output

C. a shifting level does not vary in an input as well as output

D. a shifting at input does not affect the output