s Sample papers for KVPY KVPY Stream-SX Model Paper-15 - Studyadda.com
  2. Sample Papers
  3. KVPY

KVPY Sample Paper KVPY Stream-SX Model Paper-15

  • question_answer
    Let \[f(x)={{\log }_{0.5}}({{x}^{2}}-5x+6),\] then \[f(x)\] is -

    A) One - one but not onto

    B) One - one and onto

    C) Onto but not one - one

    D) Neither one - one nor onto

    Correct Answer: C

    Solution :

    \[\because f(x)={{\log }_{0.5}}({{x}^{2}}-5x+6)\]
    \[\Rightarrow f(x)\] will be defined if \[{{x}^{2}}-5x+6>0\]
    \[\Rightarrow (x-2)\,\,(x-3)>0\]
    from graph of f(x) we can say that it will be a many -one and onto function.


You need to login to perform this action.
You will be redirected in 3 sec spinner