please
Hi,
find vectors T, N, and B at the given point
r(t)= <cost, sint, lncost>, (1,0,0)
I found T(t) = <-sint/tant, cost,tant, -1>
Is this correct?
Finding N would be messy 'quotient rule' or could I multiply T(t) by tant to remove it from the denominator?
I don't know what to do with the point (1,0,0)
Thanks.
Recall the definitions of :
We need to find
Therefore,
What do we do with the point?
After a little examination, this point corresponds to the value of [To see why this is, compare the x,y,z coordinates to the corresponding counterpart defined in the vector ; i.e. when is , and ]
Thus,
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We need to find
Therefore,
Thus,
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Since I found and for you, I would like you to find , given that
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Does this make sense?
--Chris