यदि (f(x)=\frac{1}{x-2}) और domain natural numbers में से लिया जाए, तो कौन-सा (x) domain में नहीं हो सकता?
If (f(x)=\frac{1}{x-2}) and the domain is taken from natural numbers, which (x) cannot be in the domain?
Explanation opens after your attempt
A. (2)
Concept
At (x=2), the denominator becomes (0), so (f(2)) is not defined. In a rational function, the denominator must not be zero.
Why this answer is correct
The correct answer is A. (2). At (x=2), the denominator becomes (0), so (f(2)) is not defined. In a rational function, the denominator must not be zero.
Exam Tip
(x=2) पर denominator (0) हो जाता है, इसलिए (f(2)) defined नहीं है। rational function में denominator zero न हो, यह जरूरी है।
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