GRE數(shù)學(xué)常用符號(hào)

= is equal to

≠ is not equal to

≈ is approximately equal to

> is greater than

>= is greater than or equal to

< is less than

<= is less than or equal to

√ square root

0.888888… the repeating decimal

r s't" r degrees s minutes t seconds

∠ angle

∟ right angle

┻ is perpendicular

│x│ absolute value of x

∥ is parallel to

△ triangle

～ is similar to

≌ is congruent to

Δx delta x

π pi (3.1415…)

GRE數(shù)學(xué)常用表達(dá)方式

1. is equal to; is the same as

the result is; yields; gives =

2. the sum of x and y; the total of x and y;

x added to y; x increased by y; x + y

x more than y; x greater than y

3. x minus y; x less y;

the difference of x and y; x take away y;

from x subtract y; x decreased by y; x - y

x diminished by y; y is subtracted from x;

y less than x (note the reversal)

4. x multiplied by y;

the product of x and y; xy

5. divided by y;

the quotient of x and y; x ÷ y,

y divided into x (note the reversal)

6. A and B are factors of C;

A and B are divisors of C;

C is divisible by A and by B; A × B = C

C is a multiple of A and of B;

A divides C and B divides C;

7. the ratio of a to b a:b,

8. reciprocal of x 1/x

9. x times as many z as y; z = x × y

10. a squared;

a to the second power a2

11. a cubed; a3

a to the third power

12. between a and b (a, b)

between a and b, inclusive [a, b]

13. off (低于,，從……中扣除)

14. account for (占)

15. one third 1/3

16. a of x (a fraction of x); ax

75% of x (a percent of x) 0.75x

以上就是為大家整理的GRE數(shù)學(xué)常用符號(hào)，考生們可以通過(guò)對(duì)這些符號(hào)的學(xué)習(xí)與記憶,，確保在考試中能夠理解題目并順利解答,。掌握這些符號(hào)將有助于你更好地準(zhǔn)備GRE數(shù)學(xué)部分，提升你的考試成績(jī),。

在準(zhǔn)備GRE考試時(shí),，數(shù)學(xué)部分的符號(hào)理解是非常重要的一環(huán)。掌握這些符號(hào)不僅能幫助你更快地解題,，還能減少因理解錯(cuò)誤而導(dǎo)致的失分,。以下是一些常見的GRE數(shù)學(xué)符號(hào)以及它們的含義，希望能為考生提供幫助,。??

1. 基本運(yùn)算符

• + : 加法 (Addition)
• - : 減法 (Subtraction)
• × 或 * : 乘法 (Multiplication)
• ÷ 或 / : 除法 (Division)
• = : 等于 (Equal)

2. 不等式符號(hào)

• > : 大于 (Greater than)
• < : 小于 (Less than)
• ≥ : 大于或等于 (Greater than or equal to)
• ≤ : 小于或等于 (Less than or equal to)
• ≠ : 不等于 (Not equal to)

3. 集合與邏輯符號(hào)

• ∈ : 屬于 (Element of)
• ? : 不屬于 (Not an element of)
• ∪ : 并集 (Union)
• ∩ : 交集 (Intersection)
• ? : 對(duì)所有 (For all)
• ? : 存在 (There exists)

4. 數(shù)學(xué)常數(shù)與函數(shù)符號(hào)

• π : 圓周率 (Pi, approximately 3.14)
• e : 自然對(duì)數(shù)的底數(shù) (Euler's number, approximately 2.71)
• f(x) : 函數(shù) (Function of x)
• log : 對(duì)數(shù) (Logarithm)
• √ : 平方根 (Square root)

5. 常見的數(shù)學(xué)術(shù)語(yǔ)

• Mean : 平均數(shù) (Average)
• Median : 中位數(shù) (Median)
• Mode : 眾數(shù) (Mode)
• Range : 范圍 (Difference between maximum and minimum)

在GRE數(shù)學(xué)部分,，你可能會(huì)遇到這樣的題目：

Example Question:

If x + 5 = 12, what is the value of x?

Answer: x = 12 - 5 = 7

6. 預(yù)測(cè)與新題類型

根據(jù)最近的考試趨勢(shì)，GRE數(shù)學(xué)部分可能會(huì)增加一些涉及邏輯推理和數(shù)據(jù)分析的題目,。這些題目通常會(huì)結(jié)合多個(gè)概念,，需要考生具備較強(qiáng)的綜合能力。建議考生多做練習(xí),，尤其是在數(shù)據(jù)解釋和圖表分析方面,。??

此外，考生可以參考以下新題類型,，以便更好地適應(yīng)考試：

New Question Type:

Given a set of data points, determine the mean, median, and mode.

通過(guò)對(duì)這些符號(hào)的理解和熟悉,，考生將在GRE數(shù)學(xué)部分中更加游刃有余。記得在復(fù)習(xí)過(guò)程中,，多做練習(xí)題來(lái)鞏固你的知識(shí),。祝你備考順利！??

在準(zhǔn)備GRE考試的過(guò)程中,，數(shù)學(xué)部分常常讓考生感到壓力,。為了幫助大家更好地理解和運(yùn)用常見的數(shù)學(xué)符號(hào)，這里整理了一些常用的數(shù)學(xué)符號(hào)及其解釋,。掌握這些符號(hào)將有助于提高解題效率和準(zhǔn)確性,。??

1. 基本算術(shù)符號(hào)

• + : 加法 (Addition)
• - : 減法 (Subtraction)
• × 或 * : 乘法 (Multiplication)
• ÷ 或 / : 除法 (Division)

例如，3 + 5 = 8 表示三個(gè)加上五等于八,。

2. 數(shù)學(xué)比較符號(hào)

• = : 等于 (Equal to)
• ≠ : 不等于 (Not equal to)
• < : 小于 (Less than)
• > : 大于 (Greater than)
• ≤ : 小于或等于 (Less than or equal to)
• ≥ : 大于或等于 (Greater than or equal to)

例如,，x < 10 表示 x 小于十。

3. 集合與邏輯符號(hào)

• ∈ : 屬于 (Element of)
• ? : 不屬于 (Not an element of)
• ∪ : 并集 (Union)
• ∩ : 交集 (Intersection)
• ? : 對(duì)所有 (For all)
• ? : 存在 (There exists)

例如,，A ∪ B 表示集合 A 和集合 B 的并集,。

4. 函數(shù)與圖形符號(hào)

• f(x) : 函數(shù) f 在 x 點(diǎn)的值 (Value of function f at x)
• y = mx + b : 線性方程 (Linear equation)
• √ : 平方根 (Square root)
• ∫ : 積分 (Integral)
• ∑ : 求和 (Summation)

例如，f(x) = 2x + 3 是一個(gè)線性函數(shù),。

5. 常見的幾何符號(hào)

• Δ : 三角形 (Triangle)
• ⊥ : 垂直 (Perpendicular)
• ∠ : 角度 (Angle)
• || : 平行 (Parallel)

例如,，AB ⊥ CD 表示線段 AB 與線段 CD 垂直。

6. 概率與統(tǒng)計(jì)符號(hào)

• P(A) : 事件 A 的概率 (Probability of event A)
• μ : 均值 (Mean)
• σ : 標(biāo)準(zhǔn)差 (Standard deviation)

例如,，P(A) = 0.5 表示事件 A 發(fā)生的概率為 50%,。

了解這些數(shù)學(xué)符號(hào)不僅對(duì)GRE考試有幫助，也能提高你在其他學(xué)術(shù)領(lǐng)域的數(shù)學(xué)能力,。在練習(xí)中,，嘗試使用這些符號(hào)進(jìn)行問(wèn)題解決，逐步增強(qiáng)自己的數(shù)學(xué)素養(yǎng),。??

希望這些信息能幫助你在GRE數(shù)學(xué)部分取得更好的成績(jī),！記得多做練習(xí)，并在每次遇到新符號(hào)時(shí)及時(shí)查閱和理解。祝你備考順利,！??

Preparing for the GRE can be a daunting task, especially when it comes to mastering the mathematical symbols and their meanings. Understanding these symbols is crucial for solving quantitative problems efficiently. In this article, we will explore some common GRE mathematical symbols and their meanings, along with tips on how to remember them effectively. ??

1. Basic Mathematical Symbols

Here are some of the fundamental symbols you will encounter:

• +: Addition
• ?: Subtraction
• × or ·: Multiplication
• ÷: Division
• =: Equal to
• ≠: Not equal to

These symbols form the foundation of most mathematical operations, and being comfortable with them is essential. A good way to practice is by solving basic arithmetic problems and ensuring you understand each step. ??

2. Inequalities

Inequalities are another key aspect of the GRE math section. Here are some symbols you should know:

• >: Greater than
• <: Less than
• ≥: Greater than or equal to
• ≤: Less than or equal to

When working with inequalities, remember that if you multiply or divide both sides by a negative number, the direction of the inequality sign changes. This is a common trap, so practice with various problems to reinforce this concept. ??

3. Set Theory Symbols

Set theory is often tested in the GRE, and here are some symbols related to it:

• ∈: Element of
• ?: Not an element of
• ?: Subset of
• ∪: Union
• ∩: Intersection

Understanding these symbols will help you tackle questions involving sets. You might encounter questions like “If A ? B, what can be concluded about the elements of A and B?” Practicing these types of questions will enhance your comprehension. ??

4. Functions and Graphs

Functions are another important topic in GRE math. Familiarize yourself with these symbols:

• f(x): Function notation
• →: Approaches or maps to
• |x|: Absolute value of x

Understanding function notation and how to manipulate it is vital. For instance, if you see a problem stating “If f(x) = 2x + 3, what is f(5)?”, knowing how to substitute values into the function will help you solve it quickly. ??

5. Practice Makes Perfect

The best way to familiarize yourself with these symbols is through consistent practice. Here’s a sample question to try:

Question: If x > 3 and y < 5, which of the following is true?

• A) x + y > 8
• B) x - y < -2
• C) 2x < 10
• D) y + 2 < x

Think through each option carefully, using the symbols and their meanings to guide your reasoning. The correct answer is D) y + 2 < x, since the maximum value of y is 5, making y + 2 = 7, which is less than any x greater than 3. ?

In conclusion, mastering GRE mathematical symbols is a gradual process that requires patience and practice. Use flashcards, practice tests, and online resources to reinforce your understanding. Remember, the more you practice, the more confident you will become in tackling the quantitative section of the GRE! Good luck! ??