Sunday, May 19, 2013

Given the following sequence, find a100 -15,-8,-1,6,13

-15,-8,-1,6,13 tells us that d=7, 
%0D%0Aa%5B1%5D=-15%0D%0A 

%0D%0Aa%5Bn%5D=a%5B1%5D%2B%28n-1%29d%0D%0A
%0D%0Aa%5B100%5D=-15%2B%28100-1%29%287%29%0D%0A 

a%5B100%5D=678 


:) 
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