approximation of lagrange function 拉格朗日函数近似 Linear Approximation Function 线性逼近函数 omnipotent approximation function 全能近似函数 ..
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And, if we set these things equal, what we get is actually, we are replacing the function by its linear approximation.
如果把这两个看做等价的，实际上，就是用函数的线性近似式来代替原函数。
If we want to be a bit more precise, we know that when we change by t, t that's for linear approximation to how the function changes.
如果我们想更加精确一点，我们知道当t变化的时候，乘以导数就出现了，well, t, times, the, derivative, comes, in，这是函数变化量的线性近似。
The optimal approximation functions, of a continuous function which are constituted of the linear combination of series of Chebychev polynome have the characteristics of uniform approximation.
应用第一多项式系列的线性组合构成的某连续函数的最佳逼近函数，具有一致逼近的性质。
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