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Anonymous users2024-02-13Addition of rational numbers: the addition of the same sign is one-sided; The different signs add "big" and subtract "small", and the symbols follow the big one; The absolute value is equal to "zero" just right. Note: "Large" minus "small" refers to the size of the absolute value.
Merge similar terms: Merge similar terms, the law can not be forgotten, only the sum of coefficients is sought, and the letters and exponents do not change.
Go, add brackets rule: to brackets, add brackets, the key to see the symbol, the brackets are preceded by a positive sign, go, add brackets unchanged, the brackets are preceded by a negative sign, go, add brackets are changed signs.
Unary equation: the unknown is known to be separated, the separation method is to shift, the addition and subtraction of the shift term to change the sign, multiplication and division to be reversed.
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Anonymous users2024-02-12This should work.
Zu Chongzhi (429 500 AD) was an outstanding scientist in the Northern and Southern Dynasties, whose ancestral home was in present-day Laiyuan County, Hebei Province. He was not only a mathematician, but also an astronomer who was well-versed in astronomical calendars, mechanical engineering, and other fields.
Zu Chongzhi's main achievement in mathematics was the calculation of pi, and he calculated that pi was < The significance of this result is that it pointed out the range of errors, which was the most outstanding achievement in the world at that time. Zu Chongzhi determined two forms of value, approximate rate 355 173 ( density rate 22 7 ( , both of which are asymptotic fractions of .
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Anonymous users2024-02-111. Mathematical hand-copied newspaper materials (1).
The content of a math handwritten newspaper can be varied, whether it is a mathematical formula, a mathematical story, or even a brain teaser with mathematical elements can become an element of a handwritten newspaper.
Mathematical formulas can be put on the ninety-nine multiplication table;
Mathematics stories can be historical stories related to mathematical celebrities, such as the story of Zu Chongzhi and pi.
2. Mathematics hand-copied newspaper materials (2).
The illustrations can be caricatures of math celebrities, or stick figures; Digital elements can also be used as embellishments.
At the same time, some color schemes are used to distinguish the content blocks of the hand-copied newspaper, so that the style distinction of each piece is more obvious.
3. Mathematics hand-copied newspaper materials (3).
In addition to the above, you can also add some interesting questions, such as:
If you were asked to roll two dice 24 times to get a "double six", do you think the probability is greater than 50%?
Answer: In the 17th century, Anton Gomber Chevellier de Mayer, a French nobleman who was keen on gambling, doubted that the chances of gambling had always been against him. So he wrote to the mathematicians Blaise Pascal and Pierre de Fermat about his suspicions.
They found that the probability of winning a double six 24 times is 35 to the 24th power of 36, which is approximately, which means that if you play many times, the total probability is that the probability of losing is high, which also marks the birth of probability theory.
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Anonymous users2024-02-10About Mathematics Handwritten Newspaper Material 1: Famous Quotes About Mathematics
1. Pure mathematics is the real wand of magicians. - Novales.
2. Some beautiful theorems in mathematics have the property that they are easy to generalize from facts, but the proofs are very hidden. - Gauss.
3. Mathematics governs the universe. —Pythagoras.
4. Mathematics is a tool of knowledge and a source of other knowledge tools. All the sciences that study the order and measurement are related to mathematics. —Descartes.
About the Mathematical Manuscript Newspaper **:
About Mathematics Manuscript Newspaper **1.
About the Mathematical Manuscript Newspaper **II.
About Mathematical Manuscript Manuscript Material 2: See how the brain of a mathematical genius works
Researchers generally believe that some traits in children with mathematical abnormalities must be related to genetics, especially cognitive traits such as memory, mental arithmetic, and creativity. But do you know how the brain of a math genius works? Let's take a look.
It is widely believed that children with paranormal mathematical talents are mostly born. Gauss, the greatest mathematician of the 19th century, is known as the three greatest mathematicians in history, along with Archimedes and Newton. Gauss was gifted from an early age, and when he was 3 years old, he discovered a calculation error in his father's account books; When he was 9 years old, the teacher asked his classmates to add from 1 to 100, and he immediately said the correct answer:
5050;At the age of 11, he discovered the binomial theorem.
Henry Shaffert, who is known as the "mathematical prodigy" in the United States, can do 4-digit arithmetic at the age of six, and can also calculate the square root and cube root of 9-digit and 10-digit numbers by mind; At the age of nine, he was able to calculate pi; At the age of 11, he published two almanacs. Because of his strong ability to abstract and concentrate, he eventually became a professor of astronomy at the university.
The Hungarian mathematician Eishudès is regarded as the greatest discrete mathematician of all time, especially in the field of number theory. He was a gifted mathematical genius who was able to multiply 3 digits at the age of 3 and understand the concept of negative numbers on his own at the age of 4. Known as the "father of the computer", von Neumann was one of the most outstanding mathematicians of the 20th century, who could mentally calculate eight-digit division at the age of 6, master calculus at the age of 8, and at the age of 12 he knew all about the esoteric fields of mathematics such as ** theory and general function analysis.
For the average person, math is boring and boring, but for math prodigies, math is the most fascinating intellectual game. In their view, solving math problems, especially difficult ones, is a great enjoyment of repentance. There was a mathematician who described his beloved mathematics this way:
Mathematics is a temple of mystery, a splendid labyrinth where you can enjoy endless pleasures. "Due to their strong interest in mathematics, children with mathematics super-long years have shown unusual enthusiasm and initiative in learning. It can be said that many of them have become obsessed with mathematics.
It is believed that children who are gifted in mathematics are not taught by the rules.
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Anonymous users2024-02-09The area of the triangle is 2 at the base. Formula s= a h 2 Area of a square Side length Side length Formula s= a A Area of a rectangle Length Width Formula s= a b
Area of the parallelogram Bottom Height Formula s= a h Area of the trapezoid (upper bottom + lower bottom) Height 2 Formula s=(a+b)h 2 Sum of internal angles: The sum of the internal angles of the triangle is 180 degrees.
The volume of the box Length, Width, Height, Formula: v=abh<>
Volume of the box (or cube) Base area High Formula: v=abh Volume of the cube Edge length Edge length Edge length Formula: v=aaa Circumference of a circle Diameter Formula:
l d 2 r area of the circle radius radius formula: s r2 surface (side) area of the cylinder: the surface (side) area of the cylinder is equal to the perimeter of the base surface times the height.
Formula: s=ch= dh2rh
Surface area of the cylinder: The surface area of the cylinder is equal to the circumference of the base multiplied by the height plus the area of the circle at both ends. Formula: s=ch+2s=ch+2 r2
Volume of the cylinder: The volume of the cylinder is equal to the base area multiplied by the height. Formula:
v = sh the volume of the cone 1 3 bottom area height. Formula: v=1 Addition and subtraction of 3SH fractions:
Fractions with the same denominator are added and subtracted, and only the numerator is added and subtracted, and the denominator remains the same. Fractions with different denominators are added and subtracted, first through the fractions, and then added or subtracted.
Multiplication of fractions: use the product of the numerator as the numerator and the product of the denominator as the denominator.
The division of fractions: dividing by a number is equal to multiplying by the reciprocal of that number.
Qu Yuan (about 340 B.C.-278 B.C.), surnamed Mi, Qu Shi, Mingping, Ziyuan, also from Yun Mingzheng, Zijun, was born in Zigui, Danyang, Chu (now Yichang, Hubei), a poet and politician of Chu during the Warring States Period. A descendant of Qu Bian, the son of Xiong Tong, King of Chuwu. As a teenager, he was well-educated, well-informed, and ambitious. >>>More
[Content with noble themes].
An ancient Greek philosopher likened noble virtues to life"The second sun"。If we want to raise this second sun of our lives, we have to pay a price. Only when we achieve tolerance and dedication can we climb to the peak of noble character; Only when we are tolerant and dedicated, can we ignite the second sun of our lives; >>>More
zhu19972008 Doorman Level 2 (459) |My question |My |Knowledge Boss |My Messages (4 5) |Home |Quit. >>>More
There is a lot of content about the summer hand-copied newspaper, you can write the number of summer hot classes, or drowning prevention, pay attention to traffic safety, and what fire prevention ideas should be paid attention to in summer.
1. The bee hive is a strict hexagonal columnar body, which has a flat hexagonal opening at one end and a closed hexagonal rhombus pyramidal mu chi bottom at the other end, consisting of three identical rhomboids. The diamond-shaped shape that makes up the chassis has an obtuse angle of 109 degrees 28 minutes, and all acute angles are 70 degrees 32 minutes, which is both strong and economical. The hive wall is millimeter thick, and the error is extremely small. >>>More