Question

for given AP, if Sn= n^+2n,find Tn

Answer 1

Answer:

Step-by-step explanation:

Sn= nsq+2n,let n=1.

Sn=1+2=3.

Now let n=2

Sn=4+4=8

Therefore 8-3=5 is the 2nd term.

A.p=3,5,9.......

A=3,D=4

Tn=a+(n-1)D

Tn=3+(n-1)4

Tn= -1 -4n.

Answer 2

heLlo pPl ❄
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reFer tO aTtachMent fOr ansWer

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