Question

Let p be a point on ellipse x2+2y2=2 eccentricity of conic is

Answer 1

x^2/2+y^2/1=1

a=√2,b=1

we know b^2=a^2(1-e^2)

1=2(1-e^2)

=(1-e^2)=1/2

=1/2=e^2

e=1/√2