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    • 1. 平方根

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  2. 2024年6月10日 · 任意非負 實數 都有唯一的非負平方根,稱為 主平方根 或 算術平方根 (英語: principal square root ),記為 ,其中的符號 稱作 根號 。 例如,9的主平方根為3,記作 ,因為 並且3非負。 被求平方根的數稱作 被開方數 (英語: radicand ),是根號下的數字或者表達式,即例子中的數字9。 正數 有兩個互為 相反數 的平方根:正數 與負數 ,可以將兩者一起記為 。 負數 的平方根在 複數系 中有定義。 而實際上,對任何定義了開平方運算的 數學物件 都可考慮其「平方根」(例如 矩陣的平方根 )。 在MicroSoft的試算表軟體Excel與大部分程式語言中以 "sqrt ()"表示求主平方根。 歷史 [ 編輯]

  3. en.wikipedia.org › wiki › Square_rootSquare root - Wikipedia

    The square roots of an integer are algebraic integers—more specifically quadratic integers. The square root of a positive integer is the product of the roots of its prime factors, because the square root of a product is the product of the square roots of

  4. 任意非負實數 都有唯一的非負平方根,称为算术平方根或主平方根(英語: principal square root ),記為 ,其中的符号 称作根号。 例如,9的算术平方根为3,记作 9 = 3 {\displaystyle {\sqrt {9}}=3} ,因为 3 2 = 3 × 3 = 9 {\displaystyle 3^{2}=3\times 3=9} 并且3非负。

  5. In Maths, the square root of a number produces the original number when multiplied by itself. Learn how to find square roots, square root symbol, formulas, table, etc., only at BYJU’S.

  6. www.calculatorsoup.com › calculators › algebraSquare Root Calculator

    2023年8月17日 · Use this calculator to find the principal square root and roots of real numbers. Inputs for the radicand x can be positive or negative real numbers. The answer will also tell you if you entered a perfect square. The answer will show you the complex or imaginary solutions for square roots of negative real numbers.

  7. 在線平方根計算器。 計算x的平方根。 x的平方根由以下公式給出: √ X = - [R. 輸入輸入數字(x),然後按 = 按鈕: √. 也可以看看. 根計算器. 指數計算器. 對數計算器. 在線平方根計算器。 計算x的平方根。 輸入輸入數字(x),然後按=按鈕。

  8. www.omnicalculator.com › math › square-rootSquare Root Calculator

    4 天前 · Our square root calculator estimates the square root of any positive number you want. Just enter the chosen number and read the results. Everything is calculated quickly and automatically!

  9. The square root calculator finds the square root of the given radical expression. If a given number is a perfect square, you will get a final answer in exact form. If a given number is not a perfect square, you will get a final answer in exact form and decimal form.

  10. The square root of a number \(a\), denoted \(\sqrt{a}\), is the number \(b\) such that \[b^{2} = a\text{ and }b\ge 0.\] The square root symbol "\(\sqrt{\ }\)" is also sometimes called a radical. The number or expression underneath the top line of the square root

  11. A square root is a number that can be multiplied by itself to give us the value under the radical symbol (also referred to as the radix). A square root is denoted as follows: In the figure above, z is the square root of x. We can also write this as "z raised to the power of 2 is equal to x" as follows: z 2 = x.

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