วันพฤหัสบดีที่ 25 ธันวาคม พ.ศ. 2557

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Amazing Fact About Maths

The mathematical constant pi (π) is the ratio of a circle's circumference to its diameter, and has been known since ancient times.

The concept of imaginary numbers, which are numbers that involve the square root of negative numbers, was first introduced in the 16th century.

The formula E=mc^2, which relates energy to mass, was developed by Albert Einstein in 1905.

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