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The-sum-of-the-first-term-of-sequence-is-given-by-S-n-5n-2-2n-A-sequence-U-1-U-2-U-3-is-defined-by-U-t-S-t-S-t-1-Express-U-t-in-terms-of-it-simplest-form-and-show-th




Question Number 10154 by Tawakalitu ayo mi last updated on 27/Jan/17
The sum of the first term of sequence is   given by  S_n  = 5n^2  − 2n. A sequence    U_1 , U_2 , U_3  .... is defined by U_t  = S_t  − S_(t − 1) .  Express U_t  in terms of it simplest form. and  show that sequences is linear (AP).  (a) Find the sum S_n  of the n terms of the   sequence r^(th )  term is 4 × 2^(−1)   (b) The value of n for which the difference  between S_n  and less than 10^(−4)
ThesumofthefirsttermofsequenceisgivenbySn=5n22n.AsequenceU1,U2,U3.isdefinedbyUt=StSt1.ExpressUtintermsofitsimplestform.andshowthatsequencesislinear(AP).(a)FindthesumSnofthentermsofthesequencerthtermis4×21(b)ThevalueofnforwhichthedifferencebetweenSnandlessthan104

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