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Q.

Domain of the real valued function 16−9x2+x2+x+1 is

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a

(−53 , 53)

b

[−43 , 43]

c

(−∞, −35)∪[35, ∞]

d

(−∞ , −53) ∪ (53 , ∞)

answer is B.

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Detailed Solution

16−9x2≥0 and x2+x+1≥0 x∈[−43,43] and ∀x∈R , It is true domain of f is [−43,43]
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