Senin, 21 Desember 2009

References of mathematic in english

    1. FACTOR
    In mathematics, factorization is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original. For example, the number 15 factors into primes as 3 × 5, and the polynomial x2 − 4 factors as (x − 2)(x + 2). In all cases, a product of simpler objects is obtained

    2. TRIGONOMETRY
    Trigonometry is a branch of mathematics that studies triangles, particularly right triangles. Trigonometry deals with relationships between the sides and the angles of triangles and with the trigonometric functions, which describe those relationships, as well as describing angles in general and the motion of waves such as sound and light waves. Trigonometry is usually taught in secondary schools either as a separate course or as part of a precalculus course. It has applications in both pure mathematics and in applied mathematics, where it is essential in many branches of science and technology. A branch of trigonometry, called spherical trigonometry, studies triangles on spheres, and is important in astronomy and navigation.

    3. LOGARITM
    Logaritms in mathematics, the exponent or power to which a stated number, called the base is raised to yield a specific number
    Example:
    In the expression102=100, the logarithms of 100 to the base 10 is 2.
    This written log10 100=2

    4. CUBE
    A cube is a block with all right angles and whose height, width and depth are all the same. A cube is one of the simplest mathematical shapes in space. Something that is shaped like a cube is sometimes reffered to as cubic.

    5. TRIANGLE
    Triangle (geometry), geometric figure consisting of three points, called verticles, connected by three sides. In Euclidean plane geometry the sides are straight line segments. A Euclidean plane triangle has three interior angles.

    · An angle A is acute if 00<>0

    · The angle is right f A =900

    · And it is obtuse if 900 <>0

    6. POLYNOMIAL
    Polynomial, mathematical expression consisting of the sum (or differences) of any number of terms, each of which contains a constant. Expression (mathematics) in mathematics, any meaning full combination of constant, operator and variable representing. Constant, in mathematics a fixed quantity or one that does not change its value in relation to variables. Variable, mathematical or physical quantity that does not have a fixed numerical value. A quantity that does have a fixed numerical value is known as a constant.

    7. DIFFERENTIAL
    An ordinary differential equation is an equation involuing an independent variable, a dependent variable (one or both of these two may be missing),and one or more derivaties (at least one derivative must be present). A defferential equation is solved if an equivalent equation is found involving only the independent and dependent variable.

    8. LIMIT
    In mathematicss, the concept of a "limit" is used to describe the value that a function or sequence "approaches" as the input or index approaches some value. Limits are essential to calculus (and mathematical analysis in general) and are used to define continuity, derivatives and integrals. The concept of the limit of a function is further generalized to the concept of topological net, while the limit of a sequence is closely related to limit and direct limit in category theory. In formulas, limit is usually abbreviated as lim as in lim(an) = a or represented by the right arrow (→) as in ana.

    9. PROBABILITY
    Probability is a way of expressing knowledge or belief that an event will occur or has occurred. In mathematics the concept has been given an exact meaning in probability theory, that is used extensively in such areas of study as mathematics, statistics, finance, gambling, science, and philosophy to draw conclusions about the likelihood of potential events and the underlying mechanics of complex systems.

    10. CALCULUS
    Calculus is a branch in mathematics focused on limits, functions, derivatives, integrals, and infinite series. This subject constitutes a major part of modern mathematics education. It has two major branches, differential calculus and integral calculus, which are related by the fundamental theorem of calculus. Calculus is the study of change, in the same way that geometry is the study of shape and algebra is the study of operations and their application to solving equations. A course in calculus is a gateway to other, more advanced courses in mathematics devoted to the study of functions and limits, broadly called mathematical analysis. Calculus has widespread applications in science, economics, and engineering and can solve many problems for which algebra alone is insufficient.

    11. SPHERE
    A sphere is a perfectly round geometrical object in three-dimensional space, such as the shape of a round ball. Like a circle in three dimensions, a perfect sphere is completely symmetrical around its center, with all points on the surface lying the same distance r from the center point. This distance r is known as the radius of the sphere. The maximum straight distance through the sphere is known as the diameter of the sphere. It passes through the center and is thus twice the radius. In higher mathematics, a careful distinction is made between the sphere (a two-dimensional spherical surface embedded in three-dimensional Euclidean space) and the ball (the three-dimensional shape consisting of a sphere and its interior).

    12. VOLUME
    The volume of any solid, liquid, gas, plasma, or vacuum is how much three-dimensional space it occupies, often quantified numerically. One-dimensional figures (such as lines) and two-dimensional shapes (such as squares) are assigned zero volume in the three-dimensional space. Volume is commonly presented in units such as cubic meters, cubic centimeters, liters, or milliliters. Volumes of some simple shapes, such as regular, straight-edged, and circular shapes can be easily calculated using arithmetic formulas. More complicated shapes can be calculated by integral calculus if a formula exists for its boundary. The volume of any shape can be determined by displacement. In differential geometry differential geometry , volume is expressed by means of the volume form, and is an important global Riemannian invariant.

    13. INTEGRAL
    Integration is an important concept in mathematics and, together with differentiation, is one of the two main operations in calculus. Given a function ƒ of a real variable x and an interval [a, b] of the real line, the definite integral

    \int_a^b f(x)\,dx \,

    is defined informally to be the net signed arae of the region in the xy-plane bounded by the graph of ƒ, the x-axis, and the vertical lines x = a and x = b. The term integral may also refer to the notion of antiderivative, a function F whose derivative is the given function ƒ. In this case it is called an indefinite integral, while the integrals discussed in this article are termed definite integrals. Some authors maintain a distinction between antiderivatives and indefinite integrals. The principles of integration were formulated independently by Isaac andGottfried Leibniz in the late 17th century. Through the fundamental theorem of calculus , which they independently developed, integration is connected with differentiation : if ƒ is a continuous real-valued function defined on a closed interval [a, b], then, once an antiderivative F of ƒ is known, the definite integral of ƒ over that interval is given by

    \int_a^b f(x)\,dx = F(b) - F(a)\,

    14. PRISM
    A right prism is a prism in which the joining edges and faces are perpendicular to the base faces. This applies if the joining faces are rectangular. If the joining edges and faces are not perpendicular to the base faces, it is called an oblique prism. Some texts may apply the term rectangular prism or square prism to both a right rectangular-sided prism and a right square-sided prism. The term uniform prism can be used for a right prism with square sides, since such prisms are in the set of uniform polyhedra. An n-prism, having regular polygon ends and rectangular sides, approaches a cylindrical solid as n approaches infinity. Right prisms with regular bases and equal edge lengths form one of the two infinite series of semiregular polyhedra, the other series being the antiprisms. The dual of a right prism is a bipyramid. A parallelepiped is a prism of which the base is a parallelogram, or equivalently a polyhedron with 6 faces which are all parallelograms. A right rectangular prism is also called a cuboid\, or informally a rectangular box. A right square prism is simply a square box, and may also be called a square cuboid. An equilateral square prism is simply a cube.

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