Question 481921
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Hi,
Note: {{{2x^2 = x^2/(1/2)}}}
 {{{x^2/(1/2) + y^2/2 = 1}}}
Standard Form of an Equation of an Ellipse is {{{(x-h)^2/a^2 + (y-k)^2/b^2 = 1 }}}
where Pt(h,k) is the center and a and b  are the respective vertices distances from center.
 In this case: a = sqrt(.5) and b = sqrt(2)