Which of the following is the complement of the boolean function.

A'B + CD' + A'B + CD'

  1. A'B + CD'
  2. (A + B)(C + D')
  3. (A + B')(C' + D)
  4. AB' + CD'

Answer (Detailed Solution Below)

Option 3 : (A + B')(C' + D)

Detailed Solution

Download Solution PDF

The correct answer is Option 3) (A + B')(C' + D).

Key Points

Given Boolean function: A'B + CD' + A'B + CD'

  • First simplify the given expression:
    • A'B + A'B = A'B (redundant term)
    • CD' + CD' = CD' (redundant term)
  • So, the simplified function = A'B + CD'

Now, we are asked to find the complement of this function:

Let F = A'B + CD'

Then the complement is: F' = (A'B + CD')'

Apply De Morgan’s Law:

  • (A'B + CD')' = (A'B)' · (CD')'
  • (A'B)' = A + B'
  • (CD')' = C' + D

Therefore, F' = (A + B')(C' + D)

Hence, the correct answer is: Option 3) (A + B')(C' + D)

Get Free Access Now
Hot Links: teen patti master gold apk all teen patti game teen patti refer earn teen patti plus teen patti yas