If the sum of first n term of an A.P. is 4n.n2 , what is the furst term ? what i s sum of first two terms ? what is the second term ? also ,find the 3rd term , the 10th term and the nth terms ?
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Tn=Sn-Sn-1. [ Sn=n^2+4n. may be?]
Tn= (n^2+4n)-{(n-1)^2+4(n-1)]. please solve now.
find Tn . T1,T2,T10.
Tn= (n^2+4n)-{(n-1)^2+4(n-1)]. please solve now.
find Tn . T1,T2,T10.
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