r(t):= <t | t^(2) | (t^(2) )/(2) >
The three lines above are part of a worksheet that computes unit tangent vector, unit normal vector and components of acceleration for a parametric curve r(t) , a standard Calc 3 lesson.
I am getting correct answers but with some notation that I know will confuse my students. the second line gives an answer that contains the CSGN notation . I have the Meade et al book that shows the example
simplify (sqrt(x^2),symbolic ) which overcomes this problem. But it is not working for me.
The third line gives the answer expressed using the ex , ey etc. basis. Can I get it in the < -- | -- | -- > vector notation?