Domain check

Exercise and reference answers

Questions

1. Question

   Domain of cos⁻¹ x

   Choices

   1. [−1, 1]
   2. R
   3. R − (−1, 1)

   Correct choice

   [−1, 1]

2. Question

   Domain of sec⁻¹ x

   Choices

   1. [−1, 1]
   2. R − (−1, 1)
   3. R

   Correct choice

   R − (−1, 1)

3. Question

   Domain of cot⁻¹ x

   Choices

   1. R − (−1, 1)
   2. [−1, 1]
   3. R

   Correct choice

   R

4. Question

   Domain of cosec⁻¹ x

   Choices

   1. R − (−1, 1)
   2. R
   3. [−1, 1]

   Correct choice

   R − (−1, 1)

5. Question

   Domain of tan⁻¹ x

   Choices

   1. [−1, 1]
   2. R
   3. R − (−1, 1)

   Correct choice

   R

Explanation