Which of the following pairs are identical?
Explanation:
Option (a): Domain of f(x) = x4 is R i.e.,x ∈ (-∞,∞) Domain of g(x) = x4 is R+ ∪ {0} i.e., x ∈ [0, ∞) ∴ x4 ≠ x4
Option (b): Domain of f(x) = 1x33 is R - {0} and Domain of g(x) = x2x3 is R – {0} Also, f(x) = g(x) for x ∈ R – {0} Hence, option (b).
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