The 'solution' was deleted because it was total rubbish. A large chunk of text copied from Wikipedia I think.
The question has not been answered yet.
Which post? If you were not a guest I would know which post you are talking about.
No relevant post is hidden that I can see.
That is not quite right because the cards are not replaced.
Yes it would be 4 and that is the period.
One point is (0,0), And from that point the curve goes up.
At what next point does this happen?
I mean what is the x value when is the y value next at 0 with the curve on its way up,
How far does it go in the x direction before it starts repeating? That is the period.
Tell me what you think it is and i. or someone else, will tell you if you are right.
Yes well this time you forgot the question.
Just as well your head is well screwed on.
Look here.
https://www.mathsisfun.com/geometry/ellipse.html
Please do not respond to questions with multiple questions like this.
The person is not wanting to learn, they just want the answers for the purpose of cheating.
By answering you are preventing this person from learning.