Suppose we wish to compute the value of the continuous function f(x) for a given value of x. This is the number y = f(x). (7.113) For example, if f(x) = /x, then y is the square root of x. If f(x) = 1/x, then y is the reciprocal of x. In general, the practical solution to evaluating f(x) is to construct an appropriate iteration procedure for successively calculating a sequence of approximate values yk that rapidly approach the exact value given by equation (7.113); i.e., lim Yk = Y. k→∞ (7.114) APPLICATIONS 229 To proceed with the construction of an iteration procedure, first rewrite equa- tion (7.113) in implicit form: F(x, y) = 0. (7.115) for representing Note that, in general, there are an unlimited number of equation (7.113) in implicit form. Each of these forms leads to a different iteration scheme for calculating yk. For example, let ways y = Vx, x > 0. (7.116) Then all of the following relations are valid implicit forms: F1 (x, y) = y – Vx = 0, F2(x, y) = y? – x = 0, (7.117) F3(x, y) -1= 0. y? Let Yk be the value of kth approximation to y. Application of the mean value theorem gives F(x, Yk) = F(x, Yk) – F(x, y) = (Yk – y) ƏF(x, Tk) ду (7.118) Now solve equation (7.118) for y; doing where j is a value between this gives the relation Yk and Y. F(x, Yk) F, (x, Jk)' y = Yk (7.119) where the partial derivative is indicated by the notation ƏF(x, §k) ду F,(x, Tk) = (7.120) Now the value of y is unknown. Therefore, our iteration scheme will consist of replacing yk by yk and replacing the exact value y by the corrected value Yk+1. Carrying out these replacements in equation (7.119) gives the following iteration scheme for computing approximations to the values of y for equation (7.113): F(x, Yk) Fy(x, Yk) Yk+1 = Yk = D(x, Yk). (7.121)
Family of Curves
A family of curves is a group of curves that are each described by a parametrization in which one or more variables are parameters. In general, the parameters have more complexity on the assembly of the curve than an ordinary linear transformation. These families appear commonly in the solution of differential equations. When a constant of integration is added, it is normally modified algebraically until it no longer replicates a plain linear transformation. The order of a differential equation depends on how many uncertain variables appear in the corresponding curve. The order of the differential equation acquired is two if two unknown variables exist in an equation belonging to this family.
XZ Plane
In order to understand XZ plane, it's helpful to understand two-dimensional and three-dimensional spaces. To plot a point on a plane, two numbers are needed, and these two numbers in the plane can be represented as an ordered pair (a,b) where a and b are real numbers and a is the horizontal coordinate and b is the vertical coordinate. This type of plane is called two-dimensional and it contains two perpendicular axes, the horizontal axis, and the vertical axis.
Euclidean Geometry
Geometry is the branch of mathematics that deals with flat surfaces like lines, angles, points, two-dimensional figures, etc. In Euclidean geometry, one studies the geometrical shapes that rely on different theorems and axioms. This (pure mathematics) geometry was introduced by the Greek mathematician Euclid, and that is why it is called Euclidean geometry. Euclid explained this in his book named 'elements'. Euclid's method in Euclidean geometry involves handling a small group of innately captivate axioms and incorporating many of these other propositions. The elements written by Euclid are the fundamentals for the study of geometry from a modern mathematical perspective. Elements comprise Euclidean theories, postulates, axioms, construction, and mathematical proofs of propositions.
Lines and Angles
In a two-dimensional plane, a line is simply a figure that joins two points. Usually, lines are used for presenting objects that are straight in shape and have minimal depth or width.
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