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Academia - Collins - Scientific Pocket Dictionaries - Mathematics - English - French - Arabic Letter 1_ F

face
face f

Face. The flat surfaces of a polyhedron are called faces.

A cube has six faces.

This pyramid has four faces.

factor
diviseur m. facteur m

divisor. factor. The factors of a number are all the numbers that it divides exactly by. For example:

The factors of 12 are 1, 2, 3, 4, 6, and 12.

The factors of 17 are 1 and 17.

The factors of 32 are 1, 2, 4, 8, 16, and 32.

The factors of polynomials are other polynomials that divide exactly by them. For example:

The factors of 8 - X3 are x²+2x+4 and x-2

The factors of x3+1 are x+1 and 1 + x - 2x

factorial
factoriel m

Factor. The factorial of n, written !n, is defined as the product of all the integers 3.2.1. . . and n. For example:

5 ! = 5X4 X3 X 2 X 1 =120
4 ! = 4 X 3 X 2 X 1 = 24
3i = 3 × 2 × 1 = 6
2i = 2 X 1 = 2
1i = 1 = 1

Using the above pattern we can infer that
0!=1 .

factor theorem
factoriśation f du polynôme

Divisibility theorem . This theorem states that if (x)p is a polynomial and (pa)=0, then x-a is a factor of the polynomial. For example:
If P(x)=x3-6x2+11x-6

← P ( 1 ) = 1-6 + 11-6 = 0
Factor 1 - x

← P ( 2 ) = 8-24 + 22-6 = 0
Factor 2 - x

← P ( 3 ) = 27-54 + 33-6 = 0
Factor 3 - x

factorize
factoriser

factorization. Factorization of a polynomial is to express it as the product of some of its factors. For example:

3 × 2 × 2 =
3 × 4 =
2 × 6 =
12

5 × 25, = 125 = 53

x³ - 8 = ( x - 2 ) ( x² + 2x + 4 ) ,
x³ - 2r² + x = x ( x − 1 )² .

Fahrenheit
Fahrenheit

Fahrenheit. The Fahrenheit scale is a scale of temperature measurement. The boiling and freezing points in this system are, respectively, 212° and 32°. The normal human body temperature in this system is 98.4° Fahrenheit.
Fahrenheit temperature can be converted to centigrade, the other commonly used scale, using the formula: C=5/9 (F-32)

Fibonacci series
série f de Fibonacci

The Fibonacci sequence: 34,21,13,8,5,3,2,1,1 . . . etc. Each number in this sequence is the sum of the two preceding numbers.

flowchart
organigramme m

Context statement. A diagram showing the procedure to be followed in solving a problem. For example: The context statement below shows the iterative method for finding 3/10 .

Write a number
Multiply r by ten
Twice the square root
Result recorder

focus
foyer m

Focus. A point associated with a curve of the conic family. For any point on a conic section, the ratio of the point's distance from the focus to its distance from the directrix is ​​constant (called eccentricity).

foot
pied m

Foot. A unit of length. One foot is equal to 12 inches or slightly more than 30 centimetres.