What are Log Rules?

Logarithm Rules in maths are the rules and laws that is used in simplification and manipulation of logarithmic function expressions. These principles create relationships between exponential and logarithmic forms and give a systematic technique to handle complicated logarithmic computations.

The key rules are as follows: product rule: which allows us to divide a product within a logarithm into a sum of separate logarithms; quotient rule: which allows us to divide a quotient within a logarithm into a difference of logarithms; power rule: which allows us to extract exponents from within a logarithm; base switch rule or change of base rule: which allows us to change the base of a logarithm.

These laws are crucial in many mathematical and scientific applications, making logarithms a valuable tool for solving equations, modelling exponential growth, and analysing large amounts of data.

Log Rules

Logarithm Rules or Log Rules are critical for simplifying complicated formulations that include logarithmic functions. Log Rules make it easier to calculate and manipulate logarithms in a variety of mathematical and scientific applications. Out of all these log rules, three of the most common are product rule, quotient rule, and power rule. Other than these, we have many rules of the logarithm, which we will discuss further in the article. This article explores, all the rules for logs including derivative and integral, in detail with the Logarithm Rules Examples. So, let’s start learning about all the rules logarithms have.

Table of Content

  • What are Log Rules?
  • Types of Logarithm
  • List of Logarithm Rules
  • Natural Log Rules
  • Applications of Logarithm
  • Product Rule of Logarithms
  • Logarithm Power Rule
  • Quotient Rule of Logarithms
  • Solved examples of Log Rules
  • Practise Questions on Log Rules

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What are Log Rules?

Logarithm Rules in maths are the rules and laws that is used in simplification and manipulation of logarithmic function expressions. These principles create relationships between exponential and logarithmic forms and give a systematic technique to handle complicated logarithmic computations....

Types of Logarithm

We usually deal with two kinds of logarithms:...

What are Logarithm Rules?

Logarithmic operations can be conducted according to specific rules. These rules are known as:...

Natural Log Rules

As natural and common both logs have only a difference of base, thus the rules for natural logs are the same as common log, which are already discussed. The only difference is that in natural log rules, instead of log (symbol of common log with base 10) we use ln (symbol for natural log base e). These rules can be stated as follows:...

Applications of Logarithm

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Product Rule of Logarithms

According to the product rule for logarithms, the logarithm of a multiplication of two terms is the same as the addition of the logarithms of those individual terms. In other words, this rule is expressed as logb(mn) = logb(m) + logb(n). Let’s proceed to derive this rule....

Logarithm Power Rule

The logarithm power rule states that when a logarithm’s argument is raised to a power, that exponent can be moved to the front of the logarithm. In other words, logb mn = n logb m. Let’s explore the derivation of this rule....

Quotient Rule of Logarithms

According to the quotient rule for logarithms, the logarithm of a division between two numbers is the subtraction of the logarithms of each number....

Solved examples of Log Rules

Example 1: Simplify log2(4 × 8)....

Practise Questions on Log Rules

Problem 1: Simplify the expression: log2 (4) + log2 (8)....

Log Rules – FAQs

What are Logarithm Rules?...