यदि (f(x)=\frac{x-2-1}{x+1}) और (g(x)=x-1) हैं, तो (f) और (g) किस प्रांत पर समान हैं?
If (f(x)=\frac{x-2-1}{x+1}) and (g(x)=x-1), on which domain are (f) and (g) equal?
Explanation opens after your attempt
A. \(x\ne -1\)
Concept
(x-2-1=(x-1)(x+1)), so (f=x-1), but (x=-1) is excluded. Keep the original denominator restriction in equality.
Why this answer is correct
The correct answer is A. \(x\ne -1\). (x-2-1=(x-1)(x+1)), so (f=x-1), but (x=-1) is excluded. Keep the original denominator restriction in equality.
Exam Tip
(x-2-1=(x-1)(x+1)), इसलिए (f=x-1), पर (x=-1) हटता है। समानता में मूल हर का प्रतिबंध रखें।
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