यदि (f(x)=x+1) और (g(x)=\frac{1}{x+1}) हों, तो ((fg)(x)) का सही कथन कौन-सा है?
If (f(x)=x+1) and (g(x)=\frac{1}{x+1}), which statement about ((fg)(x)) is correct?
Explanation opens after your attempt
Correct Answer
A. ((fg)(x)=1), \(x\ne -1\)
Concept
The product is (1), but \(x\ne -1\) because of the denominator of (g(x)). It is important to write the domain with the simplified form.
Why this answer is correct
The correct answer is A. ((fg)(x)=1), \(x\ne -1\). The product is (1), but \(x\ne -1\) because of the denominator of (g(x)). It is important to write the domain with the simplified form.
Exam Tip
गुणनफल (1) है, पर (g(x)) के हर के कारण \(x\ne -1\)। सरल रूप के साथ डोमेन लिखना जरूरी है।
Login to save your score, XP, coins and progress.