Math, asked by SouravArya, 10 months ago

if Sn=4n-n2 then find 3rd term and nth term of A.P​

Answers

Answered by TheOdd1sOut
4

Plz see the attachment provided below

Plz mrk as brainliest...........

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Answered by amitnrw
0

Given : Sₙ=4n-n²,

To Find :   the value of a₃

Solution:

a₃   = S₃ - S₂

=> a₃   = 4*3 -3² -   (4*2 -2² )

=> a₃   = 12 -9  -   (8 -4 )

=> a₃   = 3  -   (4 )

=>  a₃   = - 1

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