In mathematics, what is the domain of the real-valued function ?

Answer and explanation

Correct answer: C.

  1. Step 1: The fraction must be with . Step 2. Signs change at and . The fraction is positive when or . Since causes division by zero, the domain is . **Answer: . Why not the others:** gives negative values under the radical, and includes the undefined point .

Practise more Calculus, Functions, Geometry, and Probability.

Free questions with an explanation for every one, and full timed Maturità / Esame di Stato (Italy) mock tests.