A) \[\frac{1}{2\left| 1+a \right|}\]
B) \[\frac{{{a}^{2}}}{\left| 1+a \right|}\]
C) \[\frac{1}{2}\left| \frac{a}{1+a} \right|\]
D) \[\frac{{{a}^{2}}}{2\left| 1+a \right|}\]
Correct Answer: D
Solution :
\[B\equiv (0,a),\]\[{{A}_{1}}\equiv \left( \frac{a}{1+a},\frac{{{a}^{2}}}{1+a} \right)\] \[\Delta O{{A}_{1}}B=\frac{1}{2}(OB)\,\,{{A}_{1}}M=\frac{1}{2}\left| a \right|\left| \frac{a}{1+a} \right|=\frac{1}{2}\frac{{{a}^{2}}}{\left| 1+a \right|}\]You need to login to perform this action.
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