A) \[4{{x}^{2}}-5{{y}^{2}}=8\]
B) \[4{{x}^{2}}-5{{y}^{2}}=80\]
C) \[5{{x}^{2}}-4{{y}^{2}}=80\]
D) \[5{{x}^{2}}-4{{y}^{2}}=8\]
Correct Answer: C
Solution :
Centre (0, 0), vertex (4, 0) Þ and focus Þ \[ae=4\]Þ \[e=\frac{3}{2}\]. Therefore \[b=\] Hence required equation is \[\frac{{{x}^{2}}}{16}-\frac{{{y}^{2}}}{20}=1\] i.e., \[5{{x}^{2}}-4{{y}^{2}}=80\].You need to login to perform this action.
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