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Category: High school

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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