A point on the number axis that represents an integer is called an integral point. The unit length of a certain number axis is 1 cm. If you draw a line AB with the length of 2008 cm randomly on the number axis

A point on the number axis that represents an integer is called an integral point. The unit length of a certain number axis is 1 cm. If you draw a line AB with the length of 2008 cm randomly on the number axis

If your question is the number of integral points covered by the line ab of 2008 cm
The number of integral points covered by 1 cm is at most 2 and at least 1
The number of integral points covered by 2 cm is at most 3 and at least 2
The number of integral points covered by 3cm is at most 4 and at least 3
……
The maximum number of integral points covered by 2008 cm is 2009, and the minimum is 2008
If it is not clear, we will discuss it again
Let's assume that,
Suppose we draw a 2cm line segment, then there are: 1) the line segment between 0 and 2 covers 0, 1 and 2 integer points
2) The line segment between 1.5 and 3.5 covers 2, 3 and 2 integer points
Therefore, we can draw the following conclusion: the point on the number axis that represents an integer is called an integral point. The unit length of a certain number axis is 1cm. If you draw a line of length AC... On this number axis at will, expand it
Let's assume that,
Suppose we draw a 2cm line segment, then there are: 1) the line segment between 0 and 2 covers 0, 1 and 2 integer points
2) The line segment between 1.5 and 3.5 covers 2, 3 and 2 integer points
From this we can draw the following conclusion: the point representing an integer on the number axis is called integral point. The unit length of a certain number axis is 1cm. If a line segment AB of length ACM is drawn on the number axis at will, the integral number covered is a + 1 or ACM.
Original title: 2008 + 1 = 2009cm, 2008cm
Your answer is: the point representing an integer on the number axis is called integral point. The unit length of a certain number axis is 1cm. If you draw a line AB with length of 2008cm randomly on the number axis, the number of integral points covered will be 2009cm or 2008cm. Put it away
It is known that the numbers corresponding to the two points of the line a and B are - 2 and 4 respectively. P is a moving point on the number axis, and the corresponding number is X. if P is the trisection of the line AB, X is obtained
The second question is whether there is a point P on the number axis, which is the sum of the distances from P to a and B. if it is 10, there is a reason why its value does not exist
In the third question, point a, point P (at the origin) and point B move to the right for several minutes at the ratio of 1:10:2 (unit length, min) respectively. P is the midpoint of ab
1. When x4, x + 2 + x-4 = 10, 2x = 12, x = 6.3, PA = 2, Pb = 4, set time as t, then after exercise: PA = 2 + 10t-t, Pb = 4 + 2t-10t-t + 2 = 4 + 2t-10t, 21t = 2, t = 2 / 21, P is the middle of ab
On the number axis, point a represents - 6, and point B represents + 4. Please divide line AB into five equal parts, and the points are C and D from left to right
What are the numbers in each table
AB=4-(-6)=10,
Line AB is divided into five equal parts: C, D, e, F, [a, C, D, e, F, B, 6 points in total]
10/5=2,
C=A+2=-6+2=-4,
D=C+2=-4+2=-2,
E=D+2=-2+2=0,
F=E+2=0+2=2
If a = - 6, B = + 4 on this axis, the total length is 10, divided by 5, and each segment is 2. From left to right, then C = a + 2 = - 4; d = C + 2 = - 2; d = C + 2 = - 2;
What is the definition of addition, subtraction, multiplication and division?
+The sum of one number and another or several other numbers
-The difference between one number and another or several other numbers
*The product of one number and another or several other numbers
/: the quotient (except 0) of a number and another number or numbers
The meaning of integer multiplication refers to the simple operation of adding several identical numbers
The meaning of division: given the product of two factors and one of them, the operation of finding the other factor is called division
The meaning of addition is to combine two numbers into one
The meaning of subtraction is to calculate the sum of two addends and one of them
Too abstract, so much for the time being. Use it for reference
Monotone increasing interval of function y = x-sin2x on [0, π]
Have you studied derivative?
y'=1-2cos2x
1=2cos2x
cos2x=1/2
2x=pi/3,5pi/3
x=pi/6,5pi/6
(pi/6,5pi/6)
Primary school speed calculation formula (letter)
Speed = what except what time = what except what distance = what except what
Speed = distance △ time
Time = distance △ speed
Distance = speed × time
V = s|t: what else
The significance of addition, subtraction, multiplication and division
About 200 words
The operation of combining two numbers into a number the operation of combining two decimals into a decimal the operation of combining two fractions into a fraction the operation of subtraction knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend
The operation of combining two numbers into a number the operation of combining two decimals into a decimal the operation of combining two fractions into a fraction
Subtraction knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend
Simple operation of multiplication for the sum of several identical addends
Multiplying a number by a pure decimal is to find the number of tenths
The operation of combining two numbers into a number the operation of combining two decimals into a decimal the operation of combining two fractions into a fraction
Subtraction knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend
Simple operation of multiplication for the sum of several identical addends
To multiply a number by a pure decimal is to find the number of tenths, percentages The meaning of multiplication of fractions by integers is the same as that of multiplication of integers
Multiplying a number by a fraction is to find the fraction of the number
Division knows the product of two factors and one of them. The operation of finding the other factor has the same meaning as integer division and integer division
The operation of combining two numbers into a number the operation of combining two decimals into a decimal the operation of combining two fractions into a fraction
Subtraction knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend
Simple operation of multiplication for the sum of several identical addends
Multiplying a number by a pure decimal is to find the number of tenths
The operation of combining two numbers into a number the operation of combining two decimals into a decimal the operation of combining two fractions into a fraction
Subtraction knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend
Simple operation of multiplication for the sum of several identical addends
To multiply a number by a pure decimal is to find the number of tenths, percentages The meaning of multiplication of fractions by integers is the same as that of multiplication of integers
Multiplying a number by a fraction is to find the fraction of the number
Division knows the product of two factors and one of them. The operation of finding the other factor has the same meaning as integer division and integer division. Put it away
The operation of combining two numbers into a number the operation of combining two decimals into a decimal the operation of combining two fractions into a fraction
Subtraction knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend
Simple operation of multiplication for the sum of several identical addends
Multiplying a number by a pure decimal is to find the number of tenths
The operation of combining two numbers into a number the operation of combining two decimals into a decimal the operation of combining two fractions into a fraction
Subtraction knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend knowing the sum of two addends and one of them, the operation of finding the other addend
Simple operation of multiplication for the sum of several identical addends
How many times of the decimal number is one tenth of the number The meaning of multiplication of fractions by integers is the same as that of multiplication of integers
Multiplying a number by a fraction is to find the fraction of the number
Division knows the product of two factors and one of them. The operation of finding the other factor has the same meaning as integer division and integer division
F (x) = ln (x + root (x ^ 2 + 1)) (1) verification: F (- x) + F (x) = 0 (2) f ^ - 1 (x)
1) f(-x)+f(x)=ln(x+√(x^2+1))+ln(-x+√(x^2+1))=ln((x^2+1)-x^2)=ln1=0
2) y=ln(x+√(x^2+1)) , e^y=x+√(x^2+1)
The square of two sides is e ^ 2Y = 2x ^ 2 + 1 + 2x √ (x ^ 2 + 1)
So (e ^ 2y-1) / 2x = x + √ (x ^ 2 + 1) = e ^ y
So x = (e ^ 2y-1) / 2E ^ y
That is f ^ - 1 (x) = (e ^ 2x-1) / 2E ^ x (x ∈ R)
Explain what those letters are
Physical quantity unit formula name symbol name symbol mass m kg kg m = PV temperature T centigrade ° C velocity v m / S v = s / T density p kg / M & sup3; kg / M & sup3; P = m / V force (gravity) f Newton (cow) n g = mg pressure P Pascal (PA) P = f / s work
I'll read it in the book and give you all the formulas. You don't know what it means..
When a = what, 2A equals 0
When a = what, 2A = 4
Let 2A = 0
When a = 0 is 2A = 0
When a = 2 is 2A = 4
0, 2 times 0 is 0