¹úÄ£¸£ÀûÔÚÏß: Isnt maths cool
The Pied Mathematician of Hamelin
Have you ever been in a situation and felt like you were reliving a scene from a book or movie? Well it happened to me the other day when I went to visit my daughter's school. I felt exactly like I was the piper in the Pied Piper of Hamelin, because an ever-growing crowd of children followed me across the oval as I walked in.
Pi, Tau and Eta
Recently, I've heard a lot about the number Ï„, and I find the whole thing a bit odd.
Not quite the bisection method
In various first year maths courses here, the students learn the "bisection method" for finding zeros of continuous functions. (A zero of a function is a number that makes the answer of the function come out to zero – it's therefore also a point where the graph of the function crosses the x-axis.) It's based on the Intermediate Value Theorem, which basically says that if the function is below zero at one spot and above zero at another, then is must be equal to zero somewhere in between. Here's how the process goes:
Four Triangles and Three squares
The picture here holds something really cool:
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