यदि (f(x)=x-2+1) और (g(x)=x-2-1) हैं, तो ((f-g)(5)) क्या होगा?
If (f(x)=x-2+1) and (g(x)=x-2-1), what is ((f-g)(5))?
Explanation opens after your attempt
A. (2)
Concept
((f-g)(x)=\(x^2+1\)-\(x^2-1\)=2), so at any (x) the value is (2). Simplifying first reduces calculation.
Why this answer is correct
The correct answer is A. (2). ((f-g)(x)=\(x^2+1\)-\(x^2-1\)=2), so at any (x) the value is (2). Simplifying first reduces calculation.
Exam Tip
((f-g)(x)=\(x^2+1\)-\(x^2-1\)=2), इसलिए किसी भी (x) पर मान (2) है। पहले सरल करने से गणना कम होती है।
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