※ 引述《royt (Engineer)》之銘言:
: ※ [本文轉錄自 MATLAB 看板 #1HE4qka_ ]
: 可是測出來誤差過大 http://ppt.cc/d4sK
: 請問是哪個地方出問題嗎?
1/2 |(x_3 - x_1) cross (x_2 - x_1)|
you can write your program without any sqrt() operations.
maybe it can improve your calculation
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