Punctuation to change sentence meaning Pig is as big as a mountain, mouse is the first to brew wine jar, good to make vinegar jar Pig is as big as a mountain, mouse is the first to brew wine jar, good to make vinegar jar Put different punctuation on the above two paragraphs and change them into a commendatory sentence and a derogatory sentence

Punctuation to change sentence meaning Pig is as big as a mountain, mouse is the first to brew wine jar, good to make vinegar jar Pig is as big as a mountain, mouse is the first to brew wine jar, good to make vinegar jar Put different punctuation on the above two paragraphs and change them into a commendatory sentence and a derogatory sentence

The pig is as big as a mountain, the mouse is dead, the wine jar is good, the vinegar jar is sour
A pig is as big as a mouse, and its head is dead

Punctuation makes sentences different
The Shanghai team beat the Guangdong team to win the championship yesterday
(3 sentences)

In yesterday's game, Shanghai beat Guangdong and won the championship
2. In yesterday's match, Shanghai team defeated Guangdong team and won the championship
3. In yesterday's competition, the sea team defeated and Guangdong team won the championship
In yesterday's competition, the sea team beat Guangdong team and won the championship
5. The Shanghai team beat the Guangdong team and won the championship in yesterday's match
6. In yesterday's match, Shanghai beat Guangdong and won the championship

The average age of Xiaoqing and Xiaoli is 14, and that of Xiaogang and Xiaoli is 12,
The average age of Xiaogang is 13 years old. What's the average age of Xiaoqing, Xiaoli and Xiaogang?

The age of Xiaoqing and Xiaoli is 28, that of Xiaogang and Xiaoli is 24, and that of Xiaoqing and Xiaogang is 26
Suppose young age x
So Xiao Li: 28-x
Xiao Gang: 24 - (28-x)
Xiaoqing: 26 - [24 - (28-x)] = x
Solving equation 30-x = 15
Xiaoqing is 15, Xiaoli is 13 and Xiaogang is 11

Given the function FX = (2 ^ x-1) / (2 ^ x + 1), find the definition field and range of FX

Because the definition field of 2 ^ x is R and the value field is (0, + ∞)
So the domain of F (x) is r, because the denominator cannot be 0
From F (x) = 1-2 / (2 ^ x + 1), and the range of 2 ^ x + 1 is (1, + ∞), we can see that the range of 2 / (2 ^ x + 1) is (0,2), so that
The range of F (x) is (- 1,1)

1. What is the periodic function in F (X-2) = f (x)?
2. F (x-3) = - f (x-1) find a period of F (x)

1. Obviously the period is t = 2
2. Because f (x-3) = - f (x-1)
So f (X-2) = f [(x + 1) - 3] = - f [(x + 1) - 1] = - f (x)
So f (x) = - f (X-2)
So f (x + 4) = - f [(x + 4) - 2] = - f (x + 2) = - [- f (x)] = f (x)
So a period of F (x) is t = 4

Xiaoming's home is 1000 meters away from school. Xiaoming starts at 80 meters per minute. When his father finds out that he forgot to bring his book, he chases Xiaoming at 180 meters per minute
How far is it from school to catch up with Xiao Ming

Let's catch up with Xiao Ming in X minutes
180x-80x=80*5
100x=400
x=4
180*4=720
1000-720=280

Let n-order matrix a satisfy a ^ 2-3a + 2E = 0, and prove that a can be similar diagonalized

Let a be the eigenvalue of a, then a ^ 2-3a + 2 is the eigenvalue of a ^ 2-3a + 2e and a ^ 2-3a + 2E = 0, the eigenvalue of zero matrix is 0, so a ^ 2-3a + 2 = 0, so (A-1) (A-2) = 0, so the eigenvalue of a is 1 or 2. Because a ^ 2-3a + 2E = 0, so (A-E) (a-2e) = 0, so r (A-E) + R (a-2e)

Have no followed by singular or plural

Singular or plural or uncountable nouns
EG：I have no time to do my homework.
I have no apples to eat .

The ratio of the number of books sold in the bookstore on the first day to the total number is 1:4. The next day, 120 books were sold. Xiao Ming said that there were 160 books in this batch. Is he right?

160 / 5 = 32160-32 * 4 = 32, right

The square defg is inscribed in the angle a = 90 of the right triangle ABC, and De is inscribed on the hypotenuse BC, ab = a, angle B = q, and the area of defg is calculated

Let the side length of the square be XAG = xsinq, am = Ag * SINQ = x * (SINQ) ^ 2An = x + am = x + X (SINQ) ^ 2BG = Ab-Ag = a-xsinqbg / AB = GD / an (a-xsinq) / a = x / (x + X (SINQ) ^ 2) x = asinq / (1 + (SINQ) ^ 2) the area of the square be x * x = (asinq) ^ 2 / (1