ग्राफ \(y=\sqrt{x+1}\) और (y=x-1) के प्रतिच्छेद का (x)-मान क्या है?
What is the (x)-value of the intersection of the graphs \(y=\sqrt{x+1}\) and (y=x-1)?
Explanation opens after your attempt
C. (x=3)
Concept
In \(\sqrt{x+1}=x-1\), \(x\ge1\), and at (x=3) both sides are (2). In exams, the right side must be non-negative before squaring.
Why this answer is correct
The correct answer is C. (x=3). In \(\sqrt{x+1}=x-1\), \(x\ge1\), and at (x=3) both sides are (2). In exams, the right side must be non-negative before squaring.
Exam Tip
\(\sqrt{x+1}=x-1\) में \(x\ge1\) और (x=3) रखने पर दोनों (2) हैं। परीक्षा में वर्ग करने से पहले दाईं ओर अनऋणात्मक होनी चाहिए।
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