“log”是 拉丁文 logarithm（对数）的缩写，读作： [英] [lɔɡ] [美] [lɔɡ, lɑɡ]。 对数函数是6类 基本初等函数 之一。 其中 对数 的定义： 如果a x =N（a>0，且a≠1），那么数x叫做以a为底N的对数，记作x= log aN，读作以a为底N的对数，其中a叫做对数的底数，N叫做 真数。 一般地，函数y=logax（a>0，且a≠1）叫做对数函数，也就是说以 幂 （真数）为 自变量，指数为 因变量，底数为 常量 的函数，叫对数函数。 其中x是自变量，函数的 定义域 是（0，+∞），即x>0。 它实 …

2021年10月18日 · log函数是指数函数y = bx 的反函数,用于求数字以某个数为底的对数。log函数的定义:设b>0,b≠1,对于任意实数x > 0,如果存在唯一的实数y,使得 b^y = x,则称y为以b为底x的对数,记为:y = log_b(x)这里b称为对数的底数。对数运算的底数通常取10和e。

The graph of the logarithm base 2 crosses the x-axis at x = 1 and passes through the points (2, 1), (4, 2), and (8, 3), depicting, e.g., log 2 (8) = 3 and 2 3 = 8.The graph gets arbitrarily close to the y-axis, but does not meet it.. Addition, multiplication, and exponentiation are three of the most fundamental arithmetic operations. The inverse of addition is subtraction, and the inverse of ...

log b (x) = log c (x) / log c (b) For example, in order to calculate log 2 (8) in calculator, we need to change the base to 10: log 2 (8) = log 10 (8) / log 10 (2)

On a calculator it is the "log" button. It is how many times we need to use 10 in a multiplication, to get our desired number. Example: log(1000) = log 10 (1000) = 3

对数是数学代数中重要的组成部分，对数是对求幂的逆运算，对数的一般形式为x=logₐN（a>0，且a≠1），其中a叫做对数的底数，N叫做真数。 使用对数计算器，我们只需输入对数的底数和真数，即可快速计算出对数，节约人工运算时间，提升对数的运算效率，为 ...

Learn the eight (8) log rules or laws to help you evaluate, expand, condense, and solve logarithmic equations. Try out the log rules practice problems for an even better understanding.

\log_{3}(81) \log_2(30)-\log_2(15) Show More; Description. Simplify logarithmic expressions using algebraic rules step-by-step logarithms-calculator. en. Related Symbolab blog posts. High School Math Solutions – Systems of Equations Calculator, Elimination. A system of equations is a collection of two or more equations with the same set of ...

Logb x = n or bn = x. Where b is the base of the logarithmic function. This can be read as “Logarithm of x to the base b is equal to n”. In this article, we are going to learn the definition of logarithms, two types of logarithms such as common logarithm and natural logarithm, and different properties of logarithms with many solved examples.

The log statement is pronounced as "log-base-b of y equals x". The value of the subscripted base b is "the base of the logarithm", just as b is the base in the exponential expression b x. And, just as the base b in an exponential is always positive and not equal to 1, so also the base b for a logarithm is always positive and not equal to 1.