Math, asked by malalalice, 11 months ago

if the sum of first n terms of an ap is 4n^2-n , find it 12th term

Answers

Answered by jude0704

n=12
S12=4(12)^2-12
=4(144)-12
=576-12
=564
S11=4(11)^2-11
=4(121)-11
=484-11
=473
S12-S11= 12th term
564-473=91
the 12th term is 91
am I ri8

Attachments:

malalalice: y did we take s11?

jude0704: i have inserted a picture. see it

jude0704: i hope u will understand

jude0704: it can be understood if i explain u orally

malalalice: thanks sir

jude0704: i am not a teacher

jude0704: anyways welcome

jude0704: understood

jude0704: !!!

jude0704: any questions????

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