搜尋結果
有理数在英文中称作rational number，来自拉丁语rationalis，意为理性的；词根ratio，拉丁语意为理性、计算。[1] 代表“比例”的英文ratio一词在历史上出现得要比有理数（rational number）一词更晚，前者最早有记录是1660，而后者是1570年。[2] [3]
有理數在 英文 中稱作rational number，來自 拉丁語 rationalis，意為理性的；詞根ratio，拉丁語意為理性、計算。 [ 1] 代表「比例」的英文ratio一詞在歷史上出現得要比有理數（rational number）一詞更晚，前者最早有記錄是1660，而後者是1570年。 [ 2][ 3] 運算. [ 編輯] 有理數集對加、減、乘、除四則運算是封閉的，亦即有理數加、減、乘、除有理數的結果仍為有理數。 有理數的加法和乘法如下： 兩個有理數 和 相等 當且僅當. 有理數中存在加法和乘法的逆： 時， 兩數相乘，同號得正異號得負，並把絕對值相乘。 古埃及分數. [ 編輯] 主條目： 古埃及分數. 古埃及分數是分子為1、分母為正整數的有理數。
The term rational in reference to the set refers to the fact that a rational number represents a ratio of two integers. In mathematics, "rational" is often used as a noun abbreviating "rational number". The adjective rational sometimes means that the coefficients are rational numbers.
所有整數、分數、有盡小數和循環小數都是有理數。. 其實大家按「“有理數”是指我們能 準確地 掌握和表達它的值的數」就會明白。. 整數當然可以一個個咁數，所以係有理數唔奇。. 分數我地都可以準確地理解到佢係幾多。. 就算係\ (dfrac {3} {23491}\}，我地都 ...
Formal Definition of Rational Number. More formally we say: A rational number is a number that can be in the form p/q. where p and q are integers and q is not equal to zero. So, a rational number can be: p q. where q is not zero.
在數學中，實數（英語： real number ）是有理數和無理數的總稱，前者如 、 、 ；後者如 、 等。 實數可以 直觀 地看作 小數 （ 有限 或 無限 的），它們能把 數軸 「填滿」。
4 有理數及無理數(Rational & Irrational Numbers) 4.1 有理數. 所有整數、分數、有盡小數和循環小數都是有理數。. 對我來說，一個數是“有理的”是指我們能準確地掌握和表達到它的值是多少。. 例如“3/287”的值是“把1分成287份後的3份”。. 4.2 無理數. 不是“有理 ...
Rational numbers are numbers that can be expressed as the ratio of two integers. Rational numbers follow the rules of arithmetic and all rational numbers can be reduced to the form \ (\frac {a} {b}\), where \ (b\neq0\) and \ (\gcd (a,b)=1\). Rational numbers are often denoted by \ (\mathbb {Q}\).
2024年6月25日 · rational number, in arithmetic, a number that can be represented as the quotient p / q of two integers such that q ≠ 0. In addition to all the fractions, the set of rational numbers includes all the integers, each of which can be written as a quotient with the integer as the numerator and 1 as the denominator.
This number belongs to a set of numbers that mathematicians call rational numbers. Rational numbers are numbers that can be written as a ratio of two integers. Regardless of the form used, \(\ 5 . \overline{3}\) is rational because this number can be written as the ratio of 16 over 3, or \(\ \frac{16}{3}\).
