unknown07
unknown07
12-04-2017
Mathematics
contestada
!!! PLEASE HELP ME !!!
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ANChelp
ANChelp
16-04-2017
recursive formula= a(n)=a(1)(n-1)+d
a(n)= 9(n-1)+2
explicit formula= a(n)= a(1)+(n-1)d
a(n)= 9+(n-1)2
12th row= a(12)=9+(12-1)2
a(12)=9+11(2)
a(12)=9+22
a(12)=31
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