(a) Given r = 3 cos ti - 2 sin 2tj-tan tk, evaluate frdt, leaving your answer in its exact form. (b) Using r as given in part (a), find rx f rdt, and evaluate it at t = 0, without using your calculator (i.e. leave or any irrational square root expressions as they are).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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(a) Given r = 3 costi-2 sin 2tj-tan tk, evaluate fordt, leaving your answer in its
exact form.
(b) Using r as given in part (a), find r × frdt, and evaluate it at t = 0, without
using your calculator (i.e. leave or any irrational square root expressions as
they are).
Transcribed Image Text:(a) Given r = 3 costi-2 sin 2tj-tan tk, evaluate fordt, leaving your answer in its exact form. (b) Using r as given in part (a), find r × frdt, and evaluate it at t = 0, without using your calculator (i.e. leave or any irrational square root expressions as they are).
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