A problem from the quiz

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  • #35013

    Soumyadeep mandal
    Participant

    this is a question from evaluation test of Isi cmi ... plz help

    #35336

    Jatin Kr Dey
    Participant

    Try to use $$ \displaystyle (a^2+b^2+c^2-ab-bc-ca)= \frac{1}{2} [(a-b)^2+(b-c)^2+(c-a)^2] $$

     

    then proceed by the RMS – AM   ineqality .

    • This reply was modified 2 months, 1 week ago by  Jatin Kr Dey.
    • This reply was modified 2 months, 1 week ago by  Jatin Kr Dey.
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