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Real Number.

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Presentation on theme: "Real Number."— Presentation transcript:

1 Real Number

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3 Real Numbers Natural Number Integer 1, 2, 3, … Whole Number
T.So Whole Number Real Numbers Natural Number Irrational Number 0, 1, 2, 3, … Rational Number Integer Positive (more than 0) Negative (less than 0) Number divide 0 is 0 Zero Divide all number is no answer Multiply all number is 0 Plus all number is all number Minus all number is all number

4 Property of Equality

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6 Transitive Property Transitive Property
Reflexive Property Reflexive Property Symmetric Property Symmetric Property Transitive Property Transitive Property

7 Addition Property Addition Property Multiplication Property Multiplication Property

8 Property of Equality Reflexive Property EX. 7 = 7 5 = 5 10 = 10 = 4
7 = 7 5 = 5 10 = 10 = 4 9 = 9 Reflexive Property is A = A when A is Real number. Symmetric Property If 9 = then = 9 If 6 = then = 6 If 7 = then = 7 If = then = 12 Symmetric Property is if A = B, then A = B when A and B is Real number.

9 Transitive Property If 32 = 9 and 9 = 6 + 3 then 32 = 6 + 3
If = and = M then = M + 3 Transitive Property is if A = B and B = C, then A = C when A ,B and C are Real number.

10 Addition Property If 4  3 = 12 and c = 2 then (4  3) + 2 = 12 + 2
Addition Property is if A = B, then A + C = B + C when A ,B and C is Real number.

11 Multiplication Property
If 4 x 8 = 32 and c = 5 then (4 x 8 )x 5 = 32 x 5 If 9 x 6 = 54 and c = 8 then (9 x 6 )x 8 = 54 x 8 If 12 x 8 = 96 and c = 9 then (12 x 8 )x 9 = 96 x 9 Multiplication Property is if A = B, then A × C = B ×C when A ,B and C is Real number.

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13 Additional Property

14 Associativity Closure Property Additive identity Inverse property
Commutative Property Associativity Closure Property Additive identity Inverse property

15 Closure Property If 4, -3  R then 4 + (-3)  R If 20, 34  R then  R If -45, -9  R then (-9)  R Closure Property is if a, b  R Then a + b  R Ex. 3, 6  R then  R

16 Commutative Property of Addition
= (-56) = 4 + (-56) (-56) + (-99) = (-99) + (-56) Commutative Property of Addition is a + b = b + a ex =

17 (-99) + ((-2) + 8) = ((-99)+ (-2)) + 8
Associativity 10 + (2 + 8) = (10 + 2) + 8 26 + ( ) = (26+ 13) + 34 (-99) + ((-2) + 8) = ((-99)+ (-2)) + 8 Associativity a + (b + c) = (a + b) + c ex (7 + 2) = (6 + 7) + 2

18 Additive identity Additive identity is 0 + a = a = a + 0
= = = = 0 + (-9) = = (-9) + 0 Additive identity is 0 + a = a = a + 0

19 inverse property of addition
(-15) = 0 = (-15) (-47) = 0 = (-47) (-99) = 0 = (-99) (-65) = 0 = (-65) Inverse property of addition For real number a will have -a is (-a) + a = = a + (-a) ex. (-5) = = (-5)

20 1. When the square of a certain number is diminished by 9 times the number the result is 36. Find the number. square of a certain number = 9 times the number =

21 2. A certain number added to its square is 30. Find the number.

22 3. The square of a number exceeds the number by 72. Find the number.

23 4. Find two positive numbers whose ratio is 2:3 and whose product is 600.
First numbers = numbers whose ratio is 2:3 = 2x:3x product is 600 =

24 positive numbers two positive numbers

25 5. The product of two consecutive odd integers is 99. Find the integers.
If x = 9 consecutive odd integers = 9+2=11 If x = -11 consecutive odd integers = -11+2=-9

26 6. Find two consecutive positive integers such that the square of the first is decreased by 17 equals 4 times the second. First number = Second number = First number = 7 Second number = 7+1=8

27 7. The ages of three family children can be expressed as consecutive integers. The square of the age of the youngest child is 4 more than eight times the age of the oldest child. Find the ages of the three children. youngest child = oldest child = The ages of three family children = 10,11,12 year old

28 8. Find three consecutive odd integers such that the square of the first increased the product of the other two is 224. three consecutive odd integers = 9,10,11

29 9. The sum of the squares of two consecutive integers is 113
9. The sum of the squares of two consecutive integers is Find the integers. If x= 7 two consecutive integers is 7 and 8 If x= -8 two consecutive integers is -8 and -7

30 10. The sum of the squares of three consecutive integers is 302
10. The sum of the squares of three consecutive integers is Find the integers. If x= -11 three consecutive integers is -11,-10,-9 If x= 9 three consecutive integers is 9,10,11

31 11. Two integers differ by 8 and the sum of their squares is 130.
If integers is -3 two integers is -3 and -11 If integers is 11 two integers is 11 and 3

32 12. rectangle is 4 m longer than it is wide, its area is 192 m2
12. rectangle is 4 m longer than it is wide, its area is 192 m2. Find the dimensions of the rectangle. Dimensions of the rectangle = 12 x 16 = 192


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