squared value

display the r-squared value for a trendline

显示趋势线的R平方值

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now the client needs to obtain a square of a function interface (target), pass a number, get it squared value.

现在客户端需要一个求得一个数的平方的函数接口（target），传入一个数，得到它的平方值。

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Its main modeling process is that: first, establishes a second or a polynomial fitting function through the fixed dimensions of new discrete sequence; second, determines the associated threshold by the squared residuals minimum standards; the third, Screens function by the residual value calculation.

其主要的建模过程是：通过固定维度的新离散数列，建立二次或高次多项式等拟合函数；以残差平方和最小准则确定关联阈值；通过残差绝对值计算筛选函数。

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The image generated by self-squared Julia set is presented. It is also discussed to get different kinds of textile pattern by modifying rank n, constant c, zoom value scale and color parameter, etc.

介绍了二阶Julia集图像，讨论了修改其阶数n、常数c、缩放值scale以及颜色参数等，从而达到生成各种纺织图案的目的。

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