Here is a helpsheet that I created on the topic of Domain and Range of Inverse Functions, a topic no longer in O Levels but still in IP Math.
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E Maths List of Formulae to Memorize (Not in Formula List)
Here is a compilation of the Formulas needed in GCSE O Levels E Maths Exam.
Includes Formulae on Algebra and Numbers, Geometry and Measurement, Statistics and more!
Check it out at https://mathtuition88.com/math-notes-worksheets-sale/
Students in my Maths Tuition class will be taught how to memorize the formulae with understanding, and how to apply them correctly!
Keep calm, and all the best for your mid-year exams.
Mathtuition88 