find rth term of an ap whose sum of first n terms is 2n+3n^2
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hy mate here is your anshwer=>>
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=>2n+3n^2
a=>2n
d=>a2-a1
=>3n^2-2n=3n
ab=x
n=y
sorry i can not solve this problem on typing so sorry:'(:'(
_______________________
_______________________
=>2n+3n^2
a=>2n
d=>a2-a1
=>3n^2-2n=3n
ab=x
n=y
sorry i can not solve this problem on typing so sorry:'(:'(
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