Properties Of Indices And Logarithms
Overview
Indices and logarithms are two sides of the same coin. One tells you the result of repeated multiplication; the other asks which power produced a given result. Together they unlock a toolkit for simplifying expressions, solving exponential equations and converting between bases that appears throughout the Further Pure Mathematics course.
In this topic you will master the seven index laws, the four core logarithm laws, the change of base formula, and the technique for solving equations where the unknown sits in the exponent. Every rule is derived from the same principle, so once you see the pattern the whole system clicks into place.
Objectives
- Use and apply properties of indices and logarithms, including change of base
- Know that log_a(xy) = log_a(x) + log_a(y)
- Know that log_a(x/y) = log_a(x) - log_a(y)
- Know that log_a(x^k) = k log_a(x)
- Know that log_a(a) = 1 and log_a(1) = 0
- Solve equations of the form a^x = b
- Use the change of base formulae
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Properties Of Indices And Logarithms. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Simplify a^5 x a^(-2). A) a^10 B) a^7 C) a^3 D) a^(-10) Answer: C
- What is the value of 16^(3/4)? A) 4 B) 8 C) 12 D) 64 Answer: B
- Which expression is equivalent to log_a(x) + log_a(y)? A) log_a(x + y) B) log_a(xy) C) log_a(x^y) D) (log_a x)(log_a y) Answer: B
- What is the value of log_5(1)? A) 5 B) 1 C) 0 D) -1 Answer: C
- If 2^x = 10, which expression gives x? A) log 2 / log 10 B) log 10 / log 2 C) 10 / 2 D) 2 / 10 Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Practice Mock Questions
Want to practice mock questions on Properties Of Indices And Logarithms? Download the Green Bridge CBT app to access mock questions and full practice assessments for this topic.
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