How do you write the first five terms of the arithmetic sequence given #a_1=5/8, a_(k+1)=a_k-1/8# and find the common difference and write the nth term of the sequence as a function of n?
Common difference is
Common difference is the difference between a term and it's immediately preceding term. In other words as first term is
Let us consider a term
but as in given case
As first term is