[微積] 微分證明
If a particle moves along a curve x=x(t) y=(t) with constant
speed v(t)= c,show that the magnitude of the acceleration is
│a(t)│=│x'y''-x''y'│/c
不知道是不是用為分均值定理,用過了解太出來
麻煩各位高手指點一下
謝謝
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