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If five times the 5th term of an AP is equal to eight times it 8th term show that its 13th term is zero
If five times the 5th term of an AP is equal to eight times it 8th term show that its 13th term is zero
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*************** **** a ***** **** * ****** difference)
******
******* (i)
t13=a+12d
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**************************
**** this *********
iea=-12d;
now *** **************
substitute ****** *** *****
** get ******
*******
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********** ************
***
term ** y ***
****
* ** **** *******
***************
(let a
first
**** * ****** difference) ****** a+12d=0 13th ****
*******
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