यदि (f(x)=\frac{x+1}{x-1}) और (g(x)=\frac{x-1}{x+1}) हैं, तो ((f+g)(0)) क्या होगा?
If (f(x)=\frac{x+1}{x-1}) and (g(x)=\frac{x-1}{x+1}), what is ((f+g)(0))?
Explanation opens after your attempt
A. (-2)
Concept
(f(0)=-1) and (g(0)=-1), so the sum is (-2). Before substituting, check that (0) lies in the domain.
Why this answer is correct
The correct answer is A. (-2). (f(0)=-1) and (g(0)=-1), so the sum is (-2). Before substituting, check that (0) lies in the domain.
Exam Tip
(f(0)=-1) और (g(0)=-1), इसलिए योग (-2) है। मान रखने से पहले जांचें कि (0) डोमेन में है।
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