Let r(t) = 3 cost, 5 sin t, 4 cost. Show that r(t) is constant and conclude, using
Chapter 13, Problem 36(choose chapter or problem)
Let r(t) = 3 cost, 5 sin t, 4 cost. Show that r(t) is constant and conclude, using Example 7, that r(t) and r (t) are orthogonal. Then compute r (t) and verify directly that r (t) is orthogonal to r(t). 3
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