Asked by Melody
                we have to transpose the following equation to find p, but I don't quite understand how to come up with the correct answer:
x^2/p^2 + y^2/q^2 = 1
Appreciate help, thanks
            
        x^2/p^2 + y^2/q^2 = 1
Appreciate help, thanks
Answers
                    Answered by
            Damon
            
    That is an ellipse. I do not know why you are interested in its length along the x axis but ok.
x^2/p^2 = (1 - y^2/q^2)
p^2 = x^2/(1 - y^2/q^2)
p = +/- x / (1-y^2/q^2)^.5
note if y = 0 then x = +/- p =the semi axis of the ellipse
    
x^2/p^2 = (1 - y^2/q^2)
p^2 = x^2/(1 - y^2/q^2)
p = +/- x / (1-y^2/q^2)^.5
note if y = 0 then x = +/- p =the semi axis of the ellipse
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