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单词 Negative number
释义

Negative number

原声例句
耶鲁大学公开课:死亡(音频版)

So, it's zero versus some huge negative number.

所以 就是零与一个很大的负数相比。

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If the result is a negative number, you're going to have to cut back on your spending.

如果结果是负数,你就得削减开支了。

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The system, the exchange where this trading happens, it had to be changed to allow negative numbers.

这个系统,即进行交易的交易所,必须做出改变以允许负数。

双语版 TED-Ed 演讲精选

For example, for a long time, there was no such thing as taking the square root of negative numbers.

例如,长期以来,负数是不能取平方根的。

可汗学院:统计学(视频版)

Well actually, you want a negative number.

实际上,你想要一个负数。

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He was supposed to plan their family budget while their family income had already passed zero and was now approaching negative numbers.

他应该在他们的家庭收入已经超过零 现在接近负数的时候为他们计划家庭预算。

科技 Crash Course

So we need a way to represent positive and negative numbers.

所以我们需要一种方法来表示正数和负数。

数学俱乐部

Adding a negative number moves you in the negative direction.

添加负数会使您朝负方向移动。

科技 Crash Course

When we hit zero, or a negative number, we knew that we we're done.

当我们达到零或负数时,我们知道我们完成了。

Linear algebra

After that, positive numbers indicating upward motion, and negative numbers indicating downward motion.

之后 正数表示向上运动 负数表示向下运动。

数学俱乐部

Cady Heron and The Plastics. Things get interesting when we add positive and negative numbers together.

卡迪·赫伦和塑料制品。当我们将正数和负数相加时,事情会变得有趣。

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But what if we try to imagine a concept such as the square root of negative number?

但是如果我们试着想象一个概念,比如负数的平方根呢?

可汗学院:统计学(视频版)

But since we are multiplying an inequality by a negative number you have to swap the inequality sign.

但是由于我们将不等式乘以负数,因此您必须交换不等号。

数学俱乐部

Positive 1, plus negative 2, is negative 1. And what happens if we add negative numbers together?

正数1加上负数2就是负数1。如果我们把负数加在一起会发生什么?

数学俱乐部

Add a negative number, move in a negative direction.

添加一个负数,向负方向移动。

数学俱乐部

Check it out, It's our Burn Book. We put all the rules of adding negative numbers, and put them in here.

看看吧,这是我们的烧录书。我们把所有负数相加的规则,都放在这里。

数学俱乐部

Remember, positive numbers move you in the positive direction and negative numbers move you in the negative direction.

请记住,正数使您朝正方向移动,负数使您朝负方向移动。

数学俱乐部

Addition is always commutative, whether you're adding positive or negative numbers If you swap them around, you get the same answer.

加法总是可交换的,无论你添加正数还是负数如果你交换它们,你会得到相同的答案。

TED-Ed(视频版)

And since doubling a negative number still gives you a negative number, walking the three blocks to the south wall means the city owes you eight.

由于将负数加倍仍然会得到负数,所以步行三个街区到南墙意味着这座城市欠你八个。

数学俱乐部

That's it for this week. If you wanna play around with adding positive or negative numbers stick around for the quiz. Awesome!

这就是本周的内容。如果您想尝试添加正数或负数,请继续参加测验。惊人的!

中文百科

负数

负数,在数学上指小于0的实数,如−2、−3.2、−807.5等,与正数相对。和实数一样,负数也是一个不可数的无限集合。这个集合在数学上通常用粗体R\mathbb{R}^-来表示。负数与0统称非正数。

负整数可以被认为是自然数的扩展,使得等式 xy = z 对任意 xy 都有意义。相对而言,其他数的集合都是从自然数通过逐步扩展得到的。

负数在表示小于 0 的值的时候非常有用。例如,在会计学上,它可以被用来表示负债,而且通常以红色表示(若不带负数符号则加上括号),所以又称「赤字」。

自从公元前4世纪,中国数学家就已经了解负数和零的概念了。 公元1世纪的《九章算术》说“正负术曰:同名相除,异名相益,正无入负之,负无入正之。其异名相除,同名相益,正无入正之,负无入负之。”(这段话的大意是“减法:遇到同符号数字应相减其数值,遇到异符号数字应相加其数值,零减正数的差是负数,零减负数的差是正数。”)以上文本里的“无入”通常被数学历史家认为是零的概念。(全文见维基文库的《九章算术》)

英语百科

Negative number 负数

This thermometer is indicating a negative Fahrenheit temperature (−4°F).
A visual representation of the addition of positive and negative numbers. Larger balls represent numbers with greater magnitude.

In mathematics, a negative number is a real number that is less than zero. Negative numbers represent opposites. If positive represents movement to the right, negative represents movement to the left. If positive represents above sea level, then negative represents below level. If positive represents a deposit, negative represents a withdrawal. They are often used to represent the magnitude of a loss or deficiency. A debt that is owed may be thought of as a negative asset, a decrease in some quantity may be thought of as a negative increase. If a quantity may have either of two opposite senses, then one may choose to distinguish between those senses—perhaps arbitrarily—as positive and negative. In the medical context of fighting a tumor, an expansion could be thought of as a negative shrinkage. Negative numbers are used to describe values on a scale that goes below zero, such as the Celsius and Fahrenheit scales for temperature. The laws of arithmetic for negative numbers ensure that the common sense idea of an opposite is reflected in arithmetic. For example, − − 3 = 3 because the opposite of an opposite is the original thing.

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更新时间:2025/6/21 0:59:11