quadratic function

基本解释

The objective function of the model is a quadratic function with separable in the variables, and the constraints are linear.
该模型的目标函数是变量可分离二次函数，而约束条件是线性的。
In fact, the discrete logarithms problem for elliptic curves over finite fields is equivalent to the discrete logarithms problem for real quadratic function fields.
事实上，椭圆曲线的离散对数问题与函数域上理想类群的离散对数问题存在某种等价关系。
The optimal value is obtained by applying a quadratic function to approach the cost function and by progressively adding active constraints based on unconstrain optimal duration.
此法具有占计算机内存小且计算量少等优点，可以有效地解决较大的网络计划非线性时间—费用优化问题。

If you knew only the third derivative of the function, you can have something quadratic in t without changing the outcome.
如果方程里有三阶导数,你就可以引入一个二次项,但是结果却不会变
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