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

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

unbounded
indéfini

Unbounded. A function is unbounded over an interval if a value of the function is found within the interval that exceeds any given number, no matter how large.

Unbounded y=1/x-1
In the interval (1,2)

unconditional
inconditionnel

Unconditional. If the inequality x-1<x is true
For example, for all values ​​of x, it is called an unconditional inequality.

union
union f

Union. Set operation. The union of two sets A and B is the set of elements contained in A and the elements contained in B.

For example:

If (1,2,3,4) = A and ( B =(3,4,5,6

The union of A and B is {1,2,3,4,5,6}.

The symbol U is used to represent the operation, so

{1,2,3,4,5,6) = AUB

units
units fpl

Units. 1 - Standard measures of mass, length, time, etc. are called units. For example: the meter is a unit of length, and the kilogram is a unit of mass.

2 - The same term is also used to refer to 1 or a unit. For example: a circle with a radius of unit is a circle with a radius of 1, regardless of the unit of measurement used.

universal set
ensemble m universel

A universal set. The universal set, represented by the symbol, is the set that contains all the elements of all the sets considered in a problem. Thus, all sets are subsets of the universal set.

upper bound
limite f superieure

Upper bound. The upper bound of a set of numbers is a number that no member of the set exceeds.

For the set of values ​​of the function:
f(x) = 3x-1/x

In the domain of the set of positive real numbers, the upper bound is 3.