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in Sets, relations and functions by (53.3k points)
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The domain of the function f(x) = sin-1(1 + 3x + 2x2)  is

(A)  (−∞ ,∞)

(B) (−1,1)

(c)  (-3/2,0)

(D)   (-∞,-1/2)∪(2,)

1 Answer

+1 vote
by (53.5k points)
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Best answer

Correct option (c)  (-3/2,0)

Explanation :

We have

which is imaginary.

Case 2: Here, 2x2 + 3x + 1 ≤ 

Therefore, 

In Case 1, we get imaginary value; hence it is rejected. Therefore, the domain of the function is [-3/2,0]

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