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≪ & lt; go one step, go another step & gt; & gt; just referring to & quot; me & quot; falling off the cliff at that time?
It also means that I should break down problems step by step, solve them bit by bit, and finally break them into parts
In Zhu Ziqing's & lt; & lt; hurry & gt; & gt;, the & quot; ningran & quot; in the article refers to?
This article refers to the way the eyes look at it
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Try to write two rational numbers so that their sum and product are positive. Please tell us the sign of these two rational numbers
If sum and product are both positive numbers, there should be only one case, that is, if the two rational numbers are both positive numbers and the product is a positive number, it means that they have the same sign, and if sum is a positive number (the sign is the same positive; if the sign is different, the absolute value is larger, but the product is negative)
In △ ABC, if Sin & # 178; a + Sin & # 178; B < Sin & # 178; C, then the shape of △ ABC is——
In △ ABC, if Sin & # 178; a + Sin & # 178; B < Sin & # 178; C,
Namely
A square + b square < C square
Then the shape of △ ABC is an obtuse triangle
From 11 to 20, the sum of all prime numbers and composite numbers______ ．
(12 + 14 + 15 + 16 + 18 + 20) - (11 + 13 + 17 + 19) = 95-60 = 35
If the positive scale function y = K1 * x (K1 ≠ 0) and the inverse scale function y = K2 / X (K2 ≠ 0) have no focus in the same coordinate system, then the relationship between K1 and K2 is
If the positive scale function passing through the origin K1 is greater than zero, the image is in quadrant 1 and 3
If the inverse scale function K2 is greater than zero, the image is also in quadrant 1 and 3
The condition that there is no intersection point is that k1k2 is different, that is K1 * K2
Question! Conjunctions into sentences, synonyms conversion
L friend Nier clothes my has than do
2. wear the clothes my same l do brother as
Synonym conversion
1;My friend has nicer clothes than I do.
2;I wear the same clothes as my brother do.
Not trendy = out of style
It must be right
If the axis of symmetry of the parabola y equals half of the square of x plus MX plus three is a straight line and x equals two, then the value of M is
Solution
Y = 1 / 2x square + MX + 3
a=1/2,b=m,c=3
Axis of symmetry
x=-b/2a=-m/(2×1/2)=-m
∵ the axis of symmetry is x = 2
∴-m=2
∴m=-2
Given a & sup2; + 4A + B & sup2; - 8b = - 20, find a, B
a²+4a+b²-8b=-20
a²+4a+b²-8b+20=0
(a+2)²+(b-4)²+0
therefore
a+2=0 a=-2
b-4=0 b=4
Let ABC be a real number, f (x) = ax & # 178; + BX + C, G (x) = ax + B, when - 1 ≤ x ≤ 1, | f (x) | ≤ 1
Given that ABC is a real number, the function f (x) = ax & # 178; + BX + C, G (x) = ax + B, when - 1 ≤ x ≤ 1, | f (x) | ≤ 1
It is proved that | C | ≤ 12
It is proved that when - 1 ≤ x ≤ 1, | g (x) | ≤ 2
Let a & gt; 0, where - 1 ≤ x ≤ 1, the maximum value of G (x) is 2, then f (x), f (x) and f (x) are obtained
There are many answers to this question on the Internet. What I want to ask is the source of this question
That is to say, which book, page and position the title (or the title with the same meaning) came from
This is the 25th question of the national college entrance examination in 1996
RELATED INFORMATIONS
- 1. Write two rational numbers so that their sum and product are both positive numbers. Please state the sign of two rational numbers
- 2. There is a mistake in the following statement: 1. Any rational number has reciprocal; 2. The product of two reciprocal numbers is 1.3. The sign of two reciprocal numbers is the same Another is that 1 and negative 1 are reciprocal
- 3. If two non-zero rational numbers are opposite to each other, their reciprocal is also opposite to each other Such as the title
- 4. If the product of two rational numbers is 1, then the two numbers are reciprocal; the reciprocal of a is expressed as ()
- 5. Two rational numbers whose product is () are reciprocal to each other
- 6. The product of three rational numbers A.B.C is negative, and the sum is positive. Find the opposite number of a in a + the opposite number of B in B + the opposite number of C in C, The process is better, three can die!
- 7. Consider the following statements: ① the sum of 0 plus a rational number equals the rational number; ② the difference of 0 minus a rational number equals the opposite number of the rational number Consider the following statements: ① 0 plus a rational number, the sum of which is equal to the rational number; ② 0 minus a rational number, the difference is equal to the opposite of the rational number; ③ The product of 0 multiplied by a rational number is 0; ④ The quotient of 0 divided by a rational number is 0 The correct saying is () (A) One (b) two (c) three (d) four
- 8. The difference between the two numbers a must be less than the sum of the two numbers b 0 minus any rational number is equal to the opposite of the number
- 9. For a piece of clothing, the merchant sells it at a price of 150% higher than the cost price, and then launches the sales activity of "clearance sale". He sells it at a discount of 70% of the price. As a result, he still earns 150 yuan. What's the cost price of the clothing My friend, I'm sorry I don't have any points
- 10. Given a = 5, find (A-4) / (A & sup2-9) △ 1 / (A-3) * (A & sup2 + 6A + 9) / (A & sup2-8a + 16)
- 11. Given rational numbers a, B satisfy a + b > 0, B
- 12. The minimum value of a + AB + b-a-2b
- 13. Proof: no matter what rational numbers a, B, C take, A2 + B2 + C2 AB AC BC must be non negative
- 14. How to add a positive number? How to add a negative number? How to add a positive number? How to add a negative number? How to add a positive number? How to add a negative number? How to add a number and zero? Urgent, urgent!
- 15. If a, B and C are non-zero rational numbers and a + B + C = 0, it's a difficult problem to find... How to do it? a. If B and C are non-zero rational numbers and a + B + C = 0, find all possible values of a / | a | + B / | B | + C / | C | + ABC / | ABC | It's so hard. Who can? Teach me quickly,
- 16. If the positions of nonzero rational numbers a and B on the number axis are shown in the figure, then the following conclusions are correct \ -----|----------|--|--------------- 1、a+b>0; 2、a-b>0 A B 0 / 3、ab0 5、(a+b)(a-b)>0 2 3 4 5
- 17. Given that point a corresponds to rational number a on the number axis, move a four units to the left, and then one unit to the right to get point B. the rational number corresponding to point B is - 2.5. Then what is a equal to
- 18. If the rational number | a | = a, then the corresponding point of a on the number axis must be () A. Left side of origin B. The origin of the fire C. Right side of origin D. Origin or right side of origin
- 19. If the sum of two rational numbers is zero and the product is zero, then the two rational numbers () At least one of a is zero B both numbers are zero C doesn't have to be all zero D. none of the above is true It is known that the product of two numbers is - 1, one of which is 1.2 and the other is () The product of all integers whose absolute value is not greater than 4 is () If a and 3b are reciprocal, then - 9ab = () 1. It is known that the product of two numbers is - 1, one of which is 1. The other is () 2. The product of all integers whose absolute value is not greater than 4 is () 3. If a and 3b are reciprocal, then - 9ab = ()
- 20. Please give a counter example to prove that the proposition "the same side and inner angle complement each other" is a false proposition