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12th Class Mathematics Sample Paper Mathematics Olympiad - Sample Paper-7

  • question_answer
    If \[\vec{a}\] and \[\vec{b}\]be two perpendicular vectors, then

    A)  \[(\vec{a}+\vec{b})={{a}^{-2}}+{{b}^{-2}}\]         

    B)  \[(\vec{a}-\vec{b})={{a}^{-2}}+{{b}^{-2}}\]

    C)  \[{{(\vec{a}-\vec{b})}^{2}}={{\left( \vec{a}+\vec{b} \right)}^{2}}\]  

    D)  All of these

    Correct Answer: D

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