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I know how to obtain the unit tangent, it is very easy. But for the case of unit normal, I am confused.
Usually we need to know [itex]\vec{T'}(t)[/itex] and [itex]\vec{T'}(t)[/itex]
in order the find [itex]\vec{N}(t)[/itex].
However are there any quicker method to do it? Since I saw the textbook do it without step, it seems there is a quicker method.
Usually we need to know [itex]\vec{T'}(t)[/itex] and [itex]\vec{T'}(t)[/itex]
in order the find [itex]\vec{N}(t)[/itex].
However are there any quicker method to do it? Since I saw the textbook do it without step, it seems there is a quicker method.
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