Monday, August 12, 2013

find the 66th term of the arithmetic sequence with first term 1/2 and common difference is -1/3 .

a%5Bn%5D=a%5B1%5D%2B%28n-1%29d 

a%5B66%5D=1%2F2%2B%2866-1%29%2A%28-1%2F3%29=-21%261%2F6
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