A) \[{{y}^{2}}=4ax\]
B) \[{{x}^{2}}=4ay\]
C) \[{{y}^{2}}+4ax=0\]
D) \[{{x}^{2}}+4ay=0\]
Correct Answer: A
Solution :
\[{{(x-a)}^{2}}+{{y}^{2}}={{(x+a)}^{2}}\,\,\Rightarrow \,\,{{y}^{2}}=4ax\] Note: This is also the definition of parabola\[{{y}^{2}}=4ax.\]
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