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)
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