Category: High school

A Few Things You Should Learn Well in High School But No One Told You – Part 1 Absolute Values

Krystian Karczyński 15 July 2024 No Comments

If you’ve been studying mathematics at university for a while now, you’ve probably noticed that most of the material covered in high school doesn’t directly help you at university. If you’re just starting out – take note of this.

Let’s get to work. In this and the next posts, I’ll show you a few details, understanding which will greatly ease your university studies. We start with… The geometric interpretation of absolute value (as distance).

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The Symbol 0 in the Limits of Functions and Sequences

Krystian Karczyński 27 June 2024 No Comments

When working with limits of functions and sequences, we frequently come across various mathematical oddities, such as: 0/0 or 1/0.

The question is – what do they mean? I often come across completely incorrect opinions like: “at higher levels in mathematics, you can divide by 0”.

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Some Things You Should Have Learned Well in High School But Nobody Told You So – Part 5 Multiplying or dividing inequalities on both sides

Krystian Karczyński 18 October 2011 No Comments

In this post, I will continue with topics from high school that you may not have placed much emphasis on, but which will make your life much easier when you go to college.

This is part 5 – if you just came here now, you can take a look at the previous 4 posts 🙂

Here I will deal with mutual multiplication and division of inequalities.

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