Math, asked by anandpatel8098, 1 year ago

If n term of A.P.be (2n-1) then sum of first n term will be what?

Answers

Answered by arunima180901
2

Answer:

=n²

Step-by-step explanation:

Tn=2n-1

T1=1,T2=3

d=T2-T1=2

SUM OF n TERMS Sn=n/2(2a+(n-1)d)

=n/2(2+(n-1)2)

=n/2(2+2n-2)

=n/2*2n

=n²

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