adj.平方的，二次方的
n.【数】二次方程式；二次项；【数】二次方程式论

The quadratic equation \(ax^2 + bx + c = 0\) represents a parabolic shape on a graph.
这个二次方程\(ax^2 + bx + c = 0\)在图形上表示一个抛物线。
Solving a quadratic equation often involves factoring or using the quadratic formula.
解决二次方程通常包括因式分解或使用二次公式。
The vertex of a quadratic function is found at the point where the parabola changes direction.
二次函数的顶点位于抛物线改变方向的点。
She plotted the quadratic function \(y = x^2 - 4x + 3\) on the coordinate plane.
她在坐标平面上绘制了二次函数\(y = x^2 - 4x + 3\)。
Quadratic functions have a minimum or maximum value, depending on the sign of the coefficient 'a'.
二次函数有一个最小值或最大值，这取决于系数'a'的符号。
A quadratic formula helps to find the roots of a quadratic equation, which can be real or complex numbers.
二次公式有助于找到二次方程的根，可能是实数或复数。
The quadratic growth model predicts that the output will increase rapidly at first and then level off.
二次增长模型预测输出会首先快速增加，然后趋于稳定。
The quadratic discriminant determines whether a quadratic equation has two distinct, one repeated, or no real roots.
二次判别式决定了二次方程是否有两个不同的、一个重复的或没有实数根。
In physics, the potential energy stored in a spring follows a quadratic relationship with its displacement.
在物理学中，弹簧储存的势能与位移遵循二次关系。
The quadratic cost function shows how the cost increases at an increasing rate as the number of units produced increases.
二次成本函数显示随着生产的单位数量增加，成本以递增的速度增加。