أكاديميا - كولنز - معاجم الجيب العلمية - الرياضيات - انكليزي -فرنسي -عربي الحرف ٢_ d

Academia - Collins - Pocket Scientific Dictionaries - Mathematics - English - French - Arabic Letter 2_ D

diagonal
diagonale f

Diameter. The diameter of a polygon is a line connecting two non-adjacent vertices.

Diagonals of a hexagon
Diameter of a square

A polygon has 6 sides and 3 diameters that start from any of its vertices, and the total of its different diameters is 1/2n(n-3).

diameter
diamètre m

Diameter (circle). The diameter of a circle is the chord that passes through its center.

If O is the center, then AB is the diameter of the circle.

difference
différence f

Difference. The difference between two numbers a and b is the result obtained by subtracting one from the other, such as ab. The difference between the two squares ab is the common name given to the orization:

a²-b²=(a-b) (a+b)

The analogous difference between the sets A and B is (AB)U(AB) or (ANB)(BNA) and this difference is represented by the shaded area of ​​the Venn diagram above.

differentiation
différentiation f

Differentiation. The process of finding the derivative f(x) of a function f.
The process essentially involves evaluating: h /(Limit (x+h)-f(x+as h tends to O .

This process can be thought of as finding the gradient of the tangent of the graph of A at the point x by calculating the limit of the gradients of successive chords over increasingly small intervals.

For many families of functions, derivatives can be simply extracted from the original function formula, for example: f(x)=Ax", f'(x)=nx-1 for . Thus, if f(x = 221 + 33 then f'(x)=9x2+4x .

digit
chiffre m

digit . The single numeral digit (92,1.0) when used as part of a representation of a number in a place-value system for writing numbers. For example, let's take the number 35780, which has five digits, the first 3 and the last ..

digital
numérique

digital computer Digital A computer that represents numbers with a numerical code (usually ones and zeros) rather than with continuously measurable quantities as analog devices do.

directed numbers
nombres mpl naturels

Directed numbers. Numbers with a sign (positive or negative) in which positive numbers are represented along a line starting from the origin, and negative numbers are represented similarly and in the opposite direction.

In the directed number model, -3 can be viewed in two ways: either as a position on the number line or as a vector shift of three units to the left along the line. Directed numbers can be used as a model for operations using integers. For example: -2 = 3-+1+ can be viewed as one step to the right and three steps to the left gives two steps to the left.