The eccentricity of the ellipse \( 4 x^{2}+5 y^{2}=1 \) is:
P
W
(1)...
The eccentricity of the ellipse \( 4 x^{2}+5 y^{2}=1 \) is:
P
W
(1) \( \frac{1}{\sqrt{5}} \)
(2) \( \frac{1}{2} \)
(3) \( \frac{2}{5} \)
(4) \( \frac{1}{5} \)
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