if Sn, the sum of first n terms of an AP is given by Sn=
, then find the nth term of AP.
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10n - 2.... I think its the right answer
ali92:
how plss tell
u r correct
plss tell how
ohk bro
plz wait
hmm
??
Sn = 5n^2-3n...... S(n-1)= 5(n-1)^2+3n-3 = 5n^2-7n-2..... Now, nth term = Sn - S(n-1) =10n-2
thnx
NP brthr
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