أكاديميا - كولنز - معاجم الجيب العلمية - الرياضيات - انكليزي -فرنسي -عربي الحرف ٦_ c

Academia - Collins - Scientific Pocket Dictionaries - Mathematics - English - French - Arabic Letter 6_ C

conic
conique f

Cone section. A curve formed when taking a section
of the cone's surface.

By changing the angle of the section, four main types of conic sections can be obtained. (See the drawing).

Consider the conic section as the geometric locus ocus of a point that moves so that the ratio of its distance from a fixed point (focus) to its distance from a fixed line (directory) is constant. This ratio is called the eccentricity of the conic section.

1 - A circle cut parallel to the base.

2 - An ellipse.

3 - A parabola, (cut parallel to the slope).

4 - A hyperbola.

conjugate
conjugué m

Conjugate. Two angles whose sum is 360 are called conjugate angles.
The conjugate of a complex number a+bi is a - bi .

A complex number is related to its conjugate by reflection in the real axis of an Argand diagram .

The product of a complex number and its conjugate is equal to the square of its modulus .

(a+bi)x(a-bi)=a²+b²

constant
constante f

The constant of a quantity specified in an expression is called a constant. In the expression 3x+2 = y we find that 3 and 2 are constants while x and y are variables .

construction
construction f

Construction. Points or lines added to complete a geometric figure in order to prove a property of the figure are called constructions .

continuity
continuité f

Continuity. Quantities such as the number of students in a school class can be measured accurately, and the measurement can change in integer steps .

The number of students in a class does not change continuously .

However, when measuring a height, the result cannot be completely accurate. When the height increases from 160 cm to 161 cm, we assume every possible value between 160 and 161.

See the figure. Quantities such as height, weight, temperature, speed, time (time) ... etc., are continuous variables.

A person's height is a continuous variable.

converse
reciproque f

Converse. The converse of the statement "If a number ends in zero, it is divisible by ten" is: "If a number is divisible by ten, it must end in zero." There are many statements in mathematics that come in the form if . . . . then .. and the converse of this statement is: "If . . . . then." .

The converse of a true statement is not necessarily true. For example: If p and a are even numbers, then pa is an even number, is a true statement. The opposite: if pq is an even number (even), then p and f are even numbers (even) is incorrect.

conversion
conversion f

Conversion is the process of changing from one system (usually from units) to another system. For example: to express a given temperature in Fahrenheit in centigrade, use the conversion formula: C=5/9(F-32)