यदि (f(x)=x-2+1) और (g(x)=x-2-3) हों, तो ((f-g)(5)) क्या होगा?
If (f(x)=x-2+1) and (g(x)=x-2-3), what is ((f-g)(5))?
Explanation opens after your attempt
A. (4)
Concept
((f-g)(x)=\(x^2+1\)-\(x^2-3\)=4), so at (x=5) the value is also (4). Simplifying first reduces calculation.
Why this answer is correct
The correct answer is A. (4). ((f-g)(x)=\(x^2+1\)-\(x^2-3\)=4), so at (x=5) the value is also (4). Simplifying first reduces calculation.
Exam Tip
((f-g)(x)=\(x^2+1\)-\(x^2-3\)=4), इसलिए (x=5) पर भी value (4) है। पहले simplify करने से calculation कम होती है।
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