NUMBER SYSTEM
REAL NUMBERS
A real number is any element of the set R, which is the union of the set of rational numbers and the set of irrational numbers. in mathematical expressions, unknown or unspecified real numbers are usually represented by z.ex: 2, 5.6, 9.75, 5½,√2,....
RATIONAL NUMBERS
A rational number is any number that can be expressed in the form of p/q, with denominator q not equal to zero. since q may be equal to 1, every integer is a rational number.IRRATIONAL NUMBERS
An irrational number is any real number that cannot be expressed as a ratio of integers. it can not be represented as terminating or repeating decimals.ex:√2INTEGER NUMBER
An integer is a number that can be written without a fractional component.ex: 21, 4, 0, and −2048 are integers, while 9.75, 5½, and √2 are not.
N
|
Natural numbers
|
1, 2, 3, 4, ………
|
W
|
Whole numbers
|
0, 1, 2, 3, ……
|
Z
|
Integers
|
…….., -4, -3, -2, -1, 0, 1, 2, 3, 4, ……..
|
Q
|
Rational numbers
|
Any numbers in the form of p/q
|
Irrational numbers
|
An
irrational number is any real number that cannot be expressed as a ratio of
integers. it cannot be represented as terminating or repeating decimals. ex:√2,
|
|
C
|
Complex numbers
|
Numbers in the form of the form a+ib
|
No comments:
Post a Comment