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Check the picture below.
so, the maximum height is reached at the parabola's vertex, where x = how many seconds it took, y = how hight it went.
so, the maximum height is reached at the parabola's vertex, where x = how many seconds it took, y = how hight it went.
By definition, an isolated point x of a set S is a point of S.
Also, an interior point of a set S can be defined by the mean of the
existence of a positive number r>0 such that :
wherein D(x,r) is the disc of center x and radius r.
Example of a set whose boundary is not a subset of S:
Also, an interior point of a set S can be defined by the mean of the
existence of a positive number r>0 such that :
wherein D(x,r) is the disc of center x and radius r.
Example of a set whose boundary is not a subset of S: