Given the numbers a and B on the left side of a on the number axis, mark the absolute value of - A and the absolute value of - B on the number axis, and compare the absolute values of a, B, - A and - B b

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• 1. If a is on the left side of the number axis and B is on the right side of the number axis, what is the absolute value of a + B, what is the absolute value of A-B, and why
• 2. Mathematics number axis of grade one in junior high school On the right side of the origin, what is the number of points half a unit from the origin~
• 3. The concept of number axis
• 4. What is the definition of number axis
• 5. We know that the meaning of | 5 | = | 5-0 |, on the number axis, is the distance between the point of 5 and the origin (that is, the point of 0). For example, the meaning of the formula | 6-3 |, on the number axis, is the distance between the point of 6 and the point of 3. Similarly, what is the meaning of the formula | a + 5 | on the number axis?
• 6. What is the meaning of absolute value a + 5 on the number axis
• 7. A math problem: on the number axis, point a means negative 10, point B means positive 14 1. Please divide line AB into six equal parts to get C, D, e, F and g respectively, and then write down the numbers they represent? 2. Please divide the line AB into four equal parts to get the points h, m and N respectively, and then write down the numbers they represent?
• 8. What is the geometric meaning of differentiability? Is that understandable z=f(x,y) (x,y)-->(x+Δx,y+Δy) It can be expressed as: (DZ =) Δ Z ≈ a * Δ x + b * Δ y Where a and B are the partial derivatives of Z to X and Y respectively, that is, (x, y) -- > (x + Δ x, y + Δ y) the distance between two points can be expressed as the result of summation of a * Δ X in X direction and B * Δ y in Y direction
• 9. Is there a minimum value for the absolute value of x-3 + X-6? If so, write it down. If not, explain why
• 10. 123 cubic decimeter = how many cubic meters
• 11. What is the relationship between the distance between two points and the absolute value of the number difference corresponding to these two points For example: what is the case when both numbers are positive? What is the case when both numbers are negative? What's one plus one minus?
• 12. Draw the points representing the numbers of the following groups on the number axis, and think about the relationship between the distance between the corresponding points of each group and the absolute value of the difference between the two numbers 6 and 1 3 and - 2 - 3 and - 5 0 and - 2
• 13. If the distance between two corresponding points on the number axis of two numbers with equal absolute value is 8, then the two numbers are, and if the number is calculated, then the two numbers are
• 14. If the point representing the number x on the number axis is to the left of the origin, the result of simplifying 2A + radical a ^ 2 is?
• 15. If the point representing the number x on the number axis is on the left side of the origin, the result of simplifying │ 3x + √ x │ is?
• 16. Given that a and 2b are reciprocal to each other, - C and (D / 2) are opposite to each other, / X / = 4, find the value of 4ab-2c + D + (x / 4)
• 17. a. B is opposite to each other, the product of C and D is - 1, and the absolute value of X is 4 Eighth x square C third power D third power - fifteenth x third power (a + b) fifth power
• 18. For the formula - (- 8), the following understanding: (1) it can express the opposite number of - 8; (2) it can express the product of - 1 and - 8; (3) it can express the absolute value of - 8; (4) the result of operation is equal to 8. The number of misinterpretations is () A. 0B. 1C. 2D. 3
• 19. If one number is greater than the absolute value of another number, the sum of the two numbers must be equal______ 0 (fill in ">" or "<")
• 20. _ 1,+2,_ 3,+4,_ 5,+6,_ 7,+8,_ 9 fill in nine squares so that the product of three numbers is negative and the sum of absolute values of three numbers is equal