pi
圆周率（Pi）是圆的周长与直径的比值，一般用希腊字母π表示，是一个在数学及物理学中普遍存在的数学常数。π也等于圆形之面积与半径平方之比，是精确计算圆周长、圆面积、球体积等几何形状的关键值。在分析学里，π可以严格地定义为满足sinx=0的最小正数x。
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designed a lowpass filter to extract cos(0.1*pi) component from x(n)
designed a lowpass filter to extract cos(0.1*pi) component from x(n)...
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it is a progrma that aim to caculate an average value, pi value and the pris number in java envirome
it is a progrma that aim to caculate an average value, pi value and the pris number in java envirome...