名词
中文翻译：Unknown
同义词：
['Positive definite matrix', 'Positive definite form']
例句：
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1. The positive definite quadratic form is crucial for solving the system of equations.
正定二次型对于解决方程组至关重要。
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2. The positive definite quadratic form can be used to model the shape of a curve.
正定二次型可以用来描述曲线的形状。
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3. The positive definite quadratic form ensures that the solution is stable and converges to the true value.
正定二次型保证了解的稳定性，并收敛到真实值。