The sum of first n terms of an ap is given by Sn=2n2 find the sixteenth term ofthe ap.
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Sn = 2n^2
Thus,
S16 = 2[16]^2 = 2 * 256 = 512
S16 - 1 = S15 = 2 *[15]^2 = 2 * 225 = 450
Now,
term16 = S16 - S15 = 512 - 450 = 62.
Thus,
S16 = 2[16]^2 = 2 * 256 = 512
S16 - 1 = S15 = 2 *[15]^2 = 2 * 225 = 450
Now,
term16 = S16 - S15 = 512 - 450 = 62.
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