Question: When we calculate the running time of an algorithm, we need counting and sum- ming a sequence of numbers heavily. What are the values (using

 When we calculate the running time of an algorithm, we need

When we calculate the running time of an algorithm, we need counting and sum- ming a sequence of numbers heavily. What are the values (using functions +, /, xy, log but not or ellipsis (dot-dot-dot)) of the following expressions? You may google and study these expressions. (a) n+n+ ... +n (the number of n's in the expression is k) (b) 1+2+...+n

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