[微積] 關於binormal和torsion
如題,在念微基分和做題目時看到了binormal(B)和torsion
我知道B=N(cross)T,但我卻不清楚他的幾何意義
而torsion也是...但我來怎麼算都不知道QQ
去網路上找到了好幾個公式卻不知道如何下手
拜託幫忙了希望有完整的解釋...> <
感恩~~~
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