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Write a in the form a = a T+an N at the given value of t without finding T and N. r(t) = (bet cos t) i + (6 et sin t)j + (6 e

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given s (t) = 1 fet cost) it coetsint}; A t [bet 3.) E Conditions : 4:50. act zo) = ? . we know that uz de viz dads ds de (3A we know that I dt an -EKN - den + de ani compuse above Equation i a = ant aut Cara k./ds) ² 1 an = des diz VF de . dela ingaset stmt - G467 +6e(start Wlv = v(bet (Sint-646)] 27 [ce ( stnt + cost)] + bvs et) (Vi= 130€€€ (sin’e +] + 34 (62) J.1+3 .Ga=d16et (binet- cast dit bet( sind + st) +65etik) dt. . Telet (sint - ast) f (cost tsinty 7 treet (sint + 6st) 4 6c*[-sinet oWe know that an = v lase at al = 6 en t=o al. = 657 tro L 14-650 a = (betri) ² (12. (F) ² ( aje la es from ®) al = RV: 0 Ilt=a = (12.) + (6 6 853) When too from ② 4 0 1 fal = (12) +(633)

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