Multiple Choice Questions on Let f x px q and g x mx n Then f g x g f x is equivalent to ........ for NDA Exam Preparation

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Multiple Choice Questions

Let f x px q and g x mx n Then f g x g f x is equivalent to ........

Mathematics (NDA) Relations and Functions
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    Let f(x)=px+q and g(x)=mx+n.Then  f(g(x))=g(f(x)) is equivalent to

    f(p)=g(m)

    Incorrect Answer

    f(q)=g(n)

    Incorrect Answer

    f(n)=g(q)

    Correct Answer

    f(m)=g(p)

    Incorrect Answer
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    Explanation:
    p(mx+n)+q=m(px+q)+n
    ⇒pn+q=qm+n
    ⇒f(n)=g(q)

    By: Munesh Kumari
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