np.expm1

JavaScript | Math.expm1()方法 (JavaScript | Math.expm1() Method)

Math operations in JavaScript are handled using functions of math library in JavaScript. In this tutorial on Math.expm1() method, we will learn about the expm1() method and its working with examples.

JavaScript中的數(shù)學(xué)運(yùn)算是使用JavaScript中的數(shù)學(xué)庫(kù)函數(shù)處理的。 在有關(guān)Math.expm1()方法的本教程中，我們將學(xué)習(xí)expm1()方法及其示例。

Math.expm1() is a function in math library of JavaScript that is used to support math's operation of e^p-1 of a number p. Where, e is a mathematical constant with value 2.718.

Math.expm1()是JavaScript數(shù)學(xué)庫(kù)中的一個(gè)函數(shù)，用于支持?jǐn)?shù)字p的e ^p -1的數(shù)學(xué)運(yùn)算。 其中， e是一個(gè)數(shù)學(xué)常數(shù)，值為2.718 。

Syntax:

句法：

Math.expm1(p);

Parameter(s):

參數(shù)：

• p – It takes only one value which is the number.

  p –僅采用一個(gè)值即數(shù)字。

Return value:

返回值：

The return type of this method is number, it returns the result of the expression e^p-1.

該方法的返回類(lèi)型為number ，它返回表達(dá)式e ^p -1的結(jié)果。

Example 1:

范例1：

console.log(Math.expm1(0))

Output

輸出量

0

The value of e⁰ - 1 = 0

e ^0-1 = 0的值

Example 2: printing valid results for the function

示例2：為該函數(shù)打印有效結(jié)果

console.log(Math.expm1(2)) console.log(Math.expm1(2.32)) console.log(Math.expm1(-5)) console.log(Math.expm1(Math.log10(43)))

Output

輸出量

6.38905609893065 9.175674306073333 -0.9932620530009145 4.121608017082989

Example 2: Tring values that will provide invalid results for the function.

示例2：Tring值將為該函數(shù)提供無(wú)效的結(jié)果。

console.log(Math.expm1(C)) /*Uncaught ReferenceError: C is not definedat <anonymous>:1:24*/console.log(Math.expm1("include help")) /*NaN*/

翻譯自: https://www.includehelp.com/code-snippets/math-expm1-method-with-example-in-JavaScript.aspx

np.expm1

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