A calculation strategy for the recovery of density distribution by the shape observations is presented and proved by piecewise linear interpolation method.
采用分段线性插值法，给出了由形状观测离散值反求密度分布的计算方法，并给出了算例。
A digital frequency synthesizer without ROM look up table is presented, a piecewise linear interpolation scheme is used to approximate a sinusoid function.
该方法使用具有分段连续的线性分段来近似正弦函数曲线的第一象限部分，根据正弦曲线的对称性，构成完整的正弦曲线。
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