Приклади вживання Implicit curve Англійська мовою та їх переклад на Українською
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Examples of implicit curves include.
Intersection of a parametric curve and an implicit curve.
For an implicit curve one has to solve two subproblems.
Intersection of two implicit curves.
In general, every implicit curve is defined by an equation of the form.
Then a subset of the implicit curve.
In practice implicit curves have an essential drawback: their visualization is difficult.
But there are computer programs enabling one to display an implicit curve.
Because the algorithm traces the implicit curve it is called a tracing algorithm.
There are several possible ways to compute these quantities for a given implicit curve.
In practice implicit curves have an essential drawback: their visualization is difficult.
The fifth exampleshows the possibly complicated geometric structure of an implicit curve.
Hence an implicit curve can be considered as the set of zeros of a function of two variables.
If the net is dense enough,the result approximates the connected parts of the implicit curve.
Within mathematics implicit curves play a prominent role as algebraic curves. .
For the solution of both tasks mentioned above it is essential to have a computer program(which we will call C P o i n t{\displaystyle{\mathsf{CPoint}}}), which, when given a point Q 0=( x 0, y 0){\displaystyle Q_{ 0}=( x_{ 0}, y_{0})}near an implicit curve, finds a point P{\displaystyle P} that is exactly on the curve.
In addition, implicit curves are used for designing curves of desired geometrical shapes.
If the defining relations are sufficiently smooth then, in such regions, implicit curves have well defined slopes, tangent lines, normal vectors, and curvature.
To visualize an implicit curve one usually determines a polygon on the curve and displays the polygon.
However, the implicit function theorem gives conditions under which an implicit curve locally is given by the graph of a function(so in particular it has no self-intersections).
If the implicit curve consists of several or even unknown parts, it may be better to use a rasterisation algorithm.
It is easy to generate curves whichare almost geometrically similar to the given implicit curve F( x, y)= 0,{\displaystyle F(x, y)=0,} by just adding a small number: F( x, y)- c= 0{\displaystyle F(x, y)-c=0}(see section Smooth approximations).
If the implicit curve consists of several parts it has to be started several times with suitable starting points.
Special properties of implicit curves make them essential tools in geometry and computer graphics.
An implicit curve with an equation F( x, y)= 0{\displaystyle F(x, y)=0} can be considered as the level curve of level 0 of the surface z= F( x, y){\displaystyle z=F(x, y)}(see third diagram).
If one starts with simple implicit curves other than lines(circles, parabolas,…) one gets a wide range of interesting new curves.
In CAD one uses implicit curves for the generation of blending curves,[2][3] which are special curves establishing a smooth transition between two given curves.
In mathematics an implicit curve is a plane curve which is defined by an implicit equation relating the coordinate variables x and y.
In general, implicit curves fail the vertical line test(meaning that some values of x are associated with more than one value of y) and so are not necessarily graphs of functions.
For a curve defined by the implicit equation F( x, y)= 0{\displaystyle F(x, y)=0}, one can express these formulas directly in terms of the partial derivatives of F{\displaystyle F}.