أكاديميا - كولنز - معاجم الجيب العلمية - الرياضيات - انكليزي -فرنسي -عربي الحرف v

Academia - Collins - Pocket Scientific Dictionaries - Mathematics - English - French - Arabic Letter V

value
valeur f

Value. The absolute value, or modulus, of a real number is the positive numerical value of the number, ignoring any negative signs.

The symbol for absolute value is AA. For example:

I7.2I=7.2
I-9.3I=9.3

A polynomial value of a given number is the numerical result of evaluating the polynomial when that number is substituted for the variable.

For example: The value of 4x3-3x2+7 if x=-2 is 37-.

variable
variable m

A variable. A quantity that can take a series of values ​​is called a variable. For the function y=f(x) function, it is called an independent variable and can take any value in the domain of the function. y is called a dependent variable and takes values ​​in the range of the function.

For example: For the function y = sinx, the variable x can take the value of any real number while y can take any value in the range [1,1-] .

variance
variance f

Covariance . For n data items x with mean x , the average of the squares of the deviations of each x from the mean x is called the variance .

The square root of the variance α2 is called the standard deviation .

vector
vecteur m

Vector . A quantity that has the properties of both magnitude and direction is called a vector quantity. Forces, velocities, displacements, etc. are vectors. The distinctive properties of vectors have been abstracted to produce vector theory, which is an important branch of pure and applied mathematics.

Vectors are often represented by directed line segments such as AB, whose length and direction represent the magnitude and direction of the vector. Vectors are grouped around vector polygons .

AB+BC+CD=AD.
Vectors are often expressed in the form of a component proportional to a base. AB = (1/2) proportional to the unit vectors along the x and y axes.
The magnitude of AB is 12+22√= 5√ and its direction is 63.4 with the x axis (tangent 2/1 = 63.4).

velocity
vitesse f

Velocity. Velocity is a measure of acceleration in a given direction. It is the rate of change of displacement of an object per unit time. Velocity is a vector quantity.

Venn diagram
diagramme m de Venn

Venn diagram. A diagram that shows the relationships between sets by representing them as regions enclosed by simple closed curves.

This Venn diagram shows the relationship between the sets:

A = (1,2,3,4,5,6) and B = (4,5,6,7,8) and C = (5,6 where C=ANB

vertex
sommet m

Vertex. The intersection point of two adjacent sides in a polygon is called a vertex.

In a polyhedron, the vertex is the intersection point of two edges.

Vertex of a triangle
Vertex of a pyramid

vertical
verticale f

Vertical. The direction perpendicular to the horizon plane is a vertical direction. This term is often used in mathematics to refer to measurements perpendicular to a given baseline.

For example: the vertical height of a triangle.

volume
volume m

Volume. The volume of a solid is a measure of the amount of space the solid occupies.
The volumes of some simple solids can be calculated
easily.

Prism
Volume = hxA
( A Base Area )

Semi-cubic
Volume = hxbxi

Pyramid
Volume = 1/3 Axh

( A Base Area )

vulgar fraction
fraction f simple

Normal fraction. A simple fraction whose numerator is numerator and whose denominator is denominator
of integers. Such as:

721/859, 23/19, 3/4