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1. relation and function — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMaths1. relation and function1 Mark
MCQ
Domain of the function $f(x) = \sqrt {2 - {{\sec }^{ - 1}}x} $ is
  • A
    $\left( { - \infty , - 1} \right] \cup \left[ {1,\infty } \right)$
  • B
    $\left( { - \infty , - 1} \right] \cup \left[ {\sec 1,\infty } \right)$
  • ✓
    $\left( { - \infty ,\sec 2} \right] \cup \left[ {1,\infty } \right)$
  • D
    $\left( { - \infty ,\sec 2} \right] \cup \left[ {\sec 1,\infty } \right)$
✓

Answer

Correct option: C.
$\left( { - \infty ,\sec 2} \right] \cup \left[ {1,\infty } \right)$
c

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