IB DP Maths: AA HL复习笔记1.1.2 Laws of Indices
What are the laws of indices?
- Laws of indices (or index laws) allow you to simplify and manipulate expressions involving exponents
- An exponent is a power that a number (called the base) is raised to
- Laws of indices can be used when the numbers are written with the same base
- The index laws you need to know are:
These laws are not in the formula booklet so you must remember them
How are laws of indices used?
- You will need to be able to carry out multiple calculations with the laws of indices
- Take your time and apply each law individually
- Work with numbers first and then with algebra
- Index laws only work with terms that have the same base, make sure you change the base of the term before using any of the index laws
- Changing the base means rewriting the number as an exponent with the base you need
Exam Tip
- Index laws are rarely a question on their own in the exam but are often needed to help you solve other problems, especially when working with logarithms or polynomials
- Look out for times when the laws of indices can be applied to help you solve a problem algebraically
Worked Example
Simplify the following equations:
转载自savemyexams
以上就是关于【IB DP Maths: AA HL复习笔记1.1.2 Laws of Indices】的解答，如需了解学校/赛事/课程动态，可至翰林教育官网获取更多信息。
往期文章阅读推荐：
2026 AMC10/12美国数学竞赛新赛季！【翰林教育 × 清华大学出版社】独家教材全面发售！
翰林AMC8视频课重磅上线！
国际竞赛真题资源免费领取
