In this paper, we propose a new descent direction. Under the pseudomonotone of the underlying function, we prove the global convergence of the algorithm.

提出一个新的下降方向，在函数伪单调的条件下证明了算法的全局收敛性。

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In this paper, the steepest descent curve of quadratic function through one point was first defined from the steepest descent direction of quadratic function at one point.

首先，从二次函数在一点的最速下降方向出发定义二次函数过一点的最速下降曲线；

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Conclusion: the mitral annular descent velocity can be used as a new index to evaluate the LV systolic function in mi.

结论：测量二尖瓣环下行速度可作为一个评价左室收缩功能的新指标。

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