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It is known that a and B are rational numbers, and a > 0, B
Answer: - B ＞ a ＞ - a ＞ B
Method: using the number axis is the most intuitive, a is on the right side of the origin, B is on the left side of the origin, a is closer to the origin, - A and a are symmetrical about the origin, - B and B are symmetrical about the origin, finding out these four points, the size is very direct
Given that a, B and C are non-zero rational numbers, can you find the value of | a | / A + | B | / B + | C | / C
a. All of the positive numbers in B and C are positive numbers, then the positive and two negative ones in B and C are positive and two negative ones in 3A, B and C, and then the positive and two negative ones in B and C, and then the positive and two negative positive and two negative two negative ones in B and C, and so the positive and two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two positive and one negative two negative two positive and one negative two positive one negative in B, then, then the positive and negative two positive and negative two positive and negative two positive and negative two positive and negative two positive and negative two positive and negative two positive and so/ B + | C | / C = - 1-1-1 = - 3
If a and B are rational numbers and a > 0, B
-b>a>-a>b
Solving the equation 4x / (5x + 27) = 7 / 11
Help to connect this equation. Thank you
The equation can be converted to:
44X=7*（5X+27)
To get rid of the brackets:
44X=35X+189
9X=189
X=21
If the square of (x + 1) and the absolute value of Y-5 are opposite to each other, what is the square of X-Y
If a + B = 0
Then a and B become opposite numbers
If the square of (x + 1) and the absolute value of Y-5 are opposite to each other
that
（x+1）^2+|y-5|=0
So x + 1 = 0, Y-5 = 0
x=-1 y=5
The square of X - the square of Y
=1-25
=-24
(3y-1)(-9y^2-1)(-1-3y)=
(3y-1)(-9y^2-1)(-1-3y)
=(-1+3y)(-1-3y)(-9y^2-1)
=[(-1)^2-(3y)^2](-9y^2-1)
=(1-9y^2)(-9y^2-1)
=(-9y^2+1)(-9y^2-1)
=(-9y^2)^2-1^2
=81x^4-1
The second power of (2 / 1A + 2b)=
1/4a^2+2ab+4b^2
Space vector proof questions (necessary and sufficient conditions) online and other answers!
Given three points a (x1, Y1, z1) B (X2, Y2, Z2) C (X3, Y3, Z3)
The necessary and sufficient conditions for proving that a, B and C are collinear are x2-x1 = λ (x3-x1), y2-y1 = λ (y3-y1), z2-z1 = λ (z3-z1)
A. There are three collinear points B and C such that ab = λ AC
(x2-x1,y2-y1,z2-z1)=λ(x3-x1,y3-y1,z3-z1)
x2-x1=λ(x3-x1),y2-y1=λ(y3-y1),z2-z1=λ(z3-z1).
How to distinguish the interaction of forces and the balance of the two forces
Can we use the same two objects as examples?
Examples of interaction forces:
The man pushed against the wall and was bounced back
At this time, the force that people give to the wall and the force that the wall gives to people are interaction forces
(the stressed object is different)
Two examples of force balance:
There is a book on the desk
At this time, the gravity given by the earth and the supporting force given by the table balance the two forces
Find the unknown x, x = 2x = 12.60.6x + 1.4 = 5
x=2x+12.6
The result is: x-2x = 12.6
The combined result is: - x = 12.6
X=-12.6
0.6x+1.4=5
6X = 5-1.4
0.6X=3.6
X=6.
RELATED INFORMATIONS
- 1. (1) If two rational numbers a and B satisfy the relation (A-1) (B-1)
- 2. If there are two rational numbers a and B satisfying (A-1) (B-1) > 0, what is the relationship between them and 1?
- 3. a. B is two arbitrary rational numbers. Compare the size of a + B and B
- 4. A. B is any rational number, try to compare the size of a + B and a-b
- 5. If a and B satisfy a + B = 3 and A-B = 2, then A-B = ()
- 6. If the rational numbers a and B satisfy (a + 2) √ 2 = B-3, then a ∧ B A ∧ B is the power B of A
- 7. If a and B are rational numbers and | a | + | B | = 0, then () A. A and B are opposite numbers, B. A = b = 0C. A and B have opposite signs, and the value of d. A and B does not exist
- 8. Mathematical problems know that a and B are rational numbers, a > 0, B < 0. Simplify | B | - | a | + | A-B | + | a + B| It is known that a and B are rational numbers, a > 0, B < 0. Simplify | B | - | a | + | A-B | + | a + B|
- 9. If the rational numbers a and B satisfy | ab-2 | + | 1-B | = 0, Let's try to find one of ab ＋ (a ＋ 1) (B ＋ 1) ＋ (a ＋ 2) (B ＋ 2) ＋ ＋﹙a＋2011）﹙b＋2011 A value of 1 / 2
- 10. It is known that a, B and C are nonzero rational numbers It is known that a, B and C are nonzero rational numbers The molecules are a + B + C + BC + AC + AB + ABC. These are molecules; The denominator is the absolute value of the numerator above Simplify them. The sign is the plus sign By 9:30 tonight, urgent! Before 10:00 The process should be clear and easy to understand!
- 11. Let x = the absolute value of a / (B + C) + B / (c + a) + C A + B, let ABC not be 0, and a + B + C = 0 The 19th power of x-99x + 2002
- 12. Rational number: 1. The following statement is wrong: () A all rational numbers can be represented by points on the number axis The origin on the b-axis represents the number 0 The point of number - A on the c axis is to the left of the origin D 0 is the dividing point between positive and negative numbers 2. On the number axis, the following statement is incorrect: () A two rational numbers, the absolute value of large far from the origin B two rational numbers, the big one is on the right side of the number axis C two negative rational numbers, the big one is near the origin D two rational numbers, the big one is far from the origin 3. The following statement is correct: () A positive and negative numbers are called rational numbers B integers and fractions are called rational numbers C positive and negative integers are collectively called integers D fractions include fractions and negative decimals 4. The following statement is correct: () ① The absolute values of two opposite numbers are equal ② The absolute value of both positive and zero equals itself ③ Only the absolute value of a negative number is its opposite ④ The opposite absolute value of a number must be negative A. 1 B, 2 C, 3 D, 4 d
- 13. If a is a rational number, then the sum of - A and | a | is () A may be plural B is not plural C can only be positive D can only be 0 E is not a positive number F can't be sure
- 14. If (a-b) / (a + b) is not equal to 1, it is proved that a / B is a rational number
- 15. A is a rational number which is not equal to 0. Try to compare the size of a with 1 / a (hint: discuss the classification of a)
- 16. If a, B and C are rational numbers that are not equal to 0, what is the result of a / [a] + B / [b] + C / [C]? None
- 17. a. Both B and C denote rational numbers which are not equal to 0, and satisfy the following conditions: a + | B + | B + | C| 1) Try to judge the sign of a, B and C (2) Find the value of | ABC | in the formula ABC
- 18. If the distance between the point of number a and the origin on the number axis is 2, what is the sum of the absolute values of a + negative a?
- 19. 1. Negative integers with absolute values greater than 1 and less than 3 are____ ; the largest negative integer is_____ The number with the smallest absolute value is______ 2. If | - a | - a = 0, then a is_____ Ab | ab | = - 1 (b)
- 20. Look at the following column of numbers to find out the law: minus half, two thirds, three quarters, four fifths, six fifths, seven sixths Write the number of items 7, 8 and 9 What is the number 2014? Question (3) if this column of numbers is arranged infinitely, which two numbers are closer to each other?