check whether an= 2n-1 is an ap
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Answer:
Step-by-step explanation:
it is. u get 1 , 3 , 5 , 7 , 9 and so on. so it is an AP with ration 2.
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Answered by
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let n= 1,2,3,4....
a1 = 2×1-1=1
a2 = 2×2-1=3
a3= 2×3-1=5
a4= 2×4-1=7
1,3,5,7... are in ap because
t2-t1=t3-t2
3-1=5-3
2=2
so, an=2n-1 an ap
is your answer
a1 = 2×1-1=1
a2 = 2×2-1=3
a3= 2×3-1=5
a4= 2×4-1=7
1,3,5,7... are in ap because
t2-t1=t3-t2
3-1=5-3
2=2
so, an=2n-1 an ap
is your answer
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