JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        The equation of the latus-rectum of the parabola \[{{x}^{2}}+{{y}^{2}}={{a}^{2}}\] is equal to :

    A)  \[({{x}_{1}},{{y}_{1}})\]               

    B)  \[x{{y}_{1}}+y{{x}_{1}}={{a}^{2}}\]

    C)  \[{{x}_{1}}+{{y}_{1}}=a\]           

    D)  \[x{{x}_{1}}+y{{y}_{1}}=x_{1}^{2}+y_{1}^{2}\]

    Correct Answer: C

    Solution :

                    \[{{(x+2)}^{2}}=2(y-2)\] equation of latus rectum is                 \[y-2=-\frac{1}{2}\]\[\Rightarrow \]        \[y=\frac{3}{2}\]


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