• 2022-06-15
    曲线[tex=6.643x3.357]7EJHVCtO2IWq3KpdB+jQsjfBHWc0WO+PRW/lXF0SOa8IcCphyrPh35HsjRFX8LNaYw+s5AY+kGuQlo7fJBlt2rIdrZnNfS30QQF08fxTFEK9T6DJ9KDXmHjEfu4aUFxk[/tex]在点[tex=2.286x1.357]4AG4sq9ONHpAms0C151/TQ==[/tex]处的法线方程为[input=type:blank,size:6][/input]