This morning, I received an email from a student on asking how to draw a modulus graph with and without boundary condition.
What is boundary condition?
It is usually the range of values of x (otherwise known as domain) for the graph.
Though I have written a similar post in 2009 here, I feel that a video will show you clearly the step by step and important points to consider. Note that my drawing isn’t perfect, afterall it’s a freehand draw on my tablet, so you got to bear with my ‘not so straight’ lines :)
The video is about 7 minutes long. Around 6min 30s, I’ve included a bonus question to challenge yourself. Go ahead and answer it on the comment section.
Some students get really confused between differentiation and integration of Trigonometry. In fact, I personally feel that integration of Trigonometry is easier as there are only 3 general formulas (as shown). In this video, I’ve shown the thinking process, step by step approach on how to integrate Trigonometry with square power, an advanced concept. Hope you find the approach and explanation useful.
Hi,
I'm Ai Ling. I enjoy coaching students who have challenges with
understanding and scoring in 'O' Level A-Maths and E-Maths.
I develop Maths strategies, sometimes 'ridiculous' ideas to help students in
understanding abstract concepts the fast and memorable way.
I write this blog to share with you the Maths tips and strategies I teach in
my class. I hope all these will help you to enjoy Maths and achieve better
results.
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Hi,
I'm Ai Ling. I enjoy coaching students who have challenges with
understanding and scoring in 'O' Level A-Maths and E-Maths. 
