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在二维空间中,曲线系方程与参数方程组是性质不同的两类方程.例如,参数方程组(t∈R,t为定值)表示以原点为圆心,1为半径的一个圆;圆系方程(x-t)~2+(y-t)~2
In two-dimensional space, the equations of the curvilinear equations and the parametric equations are two types of equations with different properties. For example, the parametric equations (t∈R, t is a fixed value) represent a circle with the origin as its center and 1 as its radius; Equation (xt)~2+(yt)~2