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  2. Convex curve - Wikipedia

    en.wikipedia.org/wiki/Convex_curve

    A plane curve is the image of any continuous function from an interval to the Euclidean plane.Intuitively, it is a set of points that could be traced out by a moving point. More specifically, smooth curves generally at least require that the function from the interval to the plane be continuously differentiable, and in some contexts are defined to require higher derivative

  3. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  4. Parabola - Wikipedia

    en.wikipedia.org/wiki/Parabola

    Application: The 2-points–2-tangents property can be used for the construction of the tangent of a parabola at point , if , and the tangent at are given. Remark 1: The 2-points–2-tangents property of a parabola is an affine version of the 3-point degeneration of Pascal's theorem.

  5. Dilation (morphology) - Wikipedia

    en.wikipedia.org/wiki/Dilation_(morphology)

    Dilation is commutative, also given by = =. If B has a center on the origin, then the dilation of A by B can be understood as the locus of the points covered by B when the center of B moves inside A. The dilation of a square of size 10, centered at the origin, by a disk of radius 2, also centered at the origin, is a square of side 14, with ...

  6. Mathematical morphology - Wikipedia

    en.wikipedia.org/wiki/Mathematical_morphology

    The dilation is commutative, also given by = =. If B has a center on the origin, as before, then the dilation of A by B can be understood as the locus of the points covered by B when the center of B moves inside A. In the above example, the dilation of the square of side 10 by the disk of radius 2 is a square of side 14, with rounded corners ...

  7. Superparabola - Wikipedia

    en.wikipedia.org/wiki/Superparabola

    A superparabola is a geometric curve defined in the Cartesian coordinate system as a set of points (x, y) with = [()], where p, a, and b are positive integers. This equation defines an open curve within the rectangle − a ≤ x ≤ a {\displaystyle -a\leq x\leq a} , 0 ≤ y ≤ b {\displaystyle 0\leq y\leq b} .

  8. List of centroids - Wikipedia

    en.wikipedia.org/wiki/List_of_centroids

    The following is a list of centroids of various two-dimensional and three-dimensional objects. The centroid of an object X {\displaystyle X} in n {\displaystyle n} - dimensional space is the intersection of all hyperplanes that divide X {\displaystyle X} into two parts of equal moment about the hyperplane.

  9. Quadratic function - Wikipedia

    en.wikipedia.org/wiki/Quadratic_function

    The vertex of a parabola is the place where it turns; hence, it is also called the turning point. If the quadratic function is in vertex form, the vertex is ( h , k ) . Using the method of completing the square, one can turn the standard form