यदि (f(x)=3) और (g(x)=x-2-7x) हैं, तो ((fg)(x)) क्या होगा?
If (f(x)=3) and (g(x)=x-2-7x), what is ((fg)(x))?
Explanation opens after your attempt
A. \(3x^2-21x\)
Concept
((fg)(x)=3\(x^2-7x\)=3x-2-21x). When multiplying by a constant function, multiply every term.
Why this answer is correct
The correct answer is A. \(3x^2-21x\). ((fg)(x)=3\(x^2-7x\)=3x-2-21x). When multiplying by a constant function, multiply every term.
Exam Tip
((fg)(x)=3\(x^2-7x\)=3x-2-21x)। स्थिर फलन से गुणा करते समय हर पद पर गुणा करें।
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