यदि (f(x)=\sqrt{x}) और (g(x)=x-7) हैं तो (\(f\circ g\)(x)) का प्रांत क्या है?
If (f(x)=\sqrt{x}) and (g(x)=x-7) then what is the domain of (\(f\circ g\)(x))?
Explanation opens after your attempt
Correct Answer
A. \([7,\infty))
Concept
(\(f\circ g\)(x)=\sqrt{x-7}) needs \(x-7\ge 0\). Therefore \(x\ge 7\).
Why this answer is correct
The correct answer is A. \([7,\infty)). (\(f\circ g\)(x)=\sqrt{x-7}) needs \(x-7\ge 0\). Therefore \(x\ge 7\).
Exam Tip
(\(f\circ g\)(x)=\sqrt{x-7}) के लिए \(x-7\ge 0\)। इसलिए \(x\ge 7\)।
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