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3sin^-1x = sin^-1(3x - 4x^3) holds good for all (A) |x| ≤ 1 (B) 0 ≤ x ≤ 1

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3sin-1x = sin-1(3x - 4x3) holds good for all

(A) |x| ≤ 1

(B) 0 ≤ x ≤ 1

(C) |x| ≤ 1/2

(D) None of these

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1 Answer

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Best answer

Correct option (C) |x| ≤ 1/2

Explanation:

We know,

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