Q.

The domain of definition of the function f(x)=sin−1⁡(2x)+π6for real-valued x is

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a

−14,12

b

−12,12

c

−12,19

d

−14,14

answer is A.

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Detailed Solution

f(x)=sin−1⁡(2x)+π6 sin−1(2x)+π6≥0⇒sin-1(2x)≥-π6 2x≥sin-π6⇒2x≥-12⇒x≥-14and 2x≤1 x∈-14,12
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