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OAU Post-UTME Mathematics 2013 Question 11

Question 11

Algebraic Expressions

What is the value of y for which the function (y − 1)/(y + 1) is undefined?

  1. A.−1
  2. B.1
  3. C.0
  4. D.2
Show the answer and explanation

Answer: A (−1)

Explanation

A fraction is undefined when its denominator is 0: y + 1 = 0 gives y = −1.