17.(磨中)曲线 xy=1 的参数方程是( )1a x=t 2b x=sinα y=cscαc x=cosα y=seeαdx=tanα y=cotαy=t1 2正确答案:选 d 错误原因:忽视了所选参数的范围,因而导致错误选...
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我希望在这明白,参数方程是考虑直线的一个很好办法。
So, I hope you've seen here that parametric equations are a great way to think about lines.
算例表明,描述锚链线形状的参数方程是合理的。
Numerical example showed that the parametric equation is rational to describe the shape of mooring line.
我们建立有两个变量φ和θ的球面的参数方程,它们恰好是,球坐标系统的一部分。
We are finding a parametric equation for the sphere using two variables phi and theta which happen to be part of the spherical coordinate system.
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