MCQ
ઉપવલય $9x^2 + 5y^2 - 30y = 0 $ ની ઉત્કેન્દ્રતા ....
- A$1/3$
- B$2/3$
- C$3/4$
- Dએકપણ નહિ
$\frac{{{x^2}}}{5}\,\, + \;\,\frac{{{{\left( {y\,\, - \,\,3} \right)}^2}}}{9}\,\, = \,\,1$
$ \Rightarrow \,\,{a^2}\,\, = \,\,5,\,\,{b^2}\,\, = \,\,9\,\,$
તેથી $\,e\,\, = \,\,\frac{2}{3}$
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