Question: Write a in the form a = a+T+ aNN at the given value of t without finding T and N. r(t)=(9e cos t)i+ (9e'

Write a in the form a = a+T+ aNN at the given value of t without finding T and N. r(t)=(9e cos t)i+ (9e' sin t)j+ (9e'7)k, t=0 a(0)=T+N (Type exact answers, using radicals as needed.)

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