A) \[36{{x}^{2}}+9{{y}^{2}}=4{{l}^{2}}\]
B) \[36{{x}^{2}}+9{{y}^{2}}={{l}^{2}}\]
C) \[9{{x}^{2}}+36{{y}^{2}}=4{{l}^{2}}\]
D) None of these
Correct Answer: C
Solution :
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