When using the common summations, such as first n squared natural numbers, the lower limit of summation must be: Questio

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When using the common summations, such as first n squarednatural numbers, the lower limit of summation must be:
Question 3 options: a) 0 b) negative c) positive d) 1
One use of summation notation is to:
Question 2 options:
a) complicate mathematical expressions
b) simplify mathematical expressions and write themcompactly
c) satisfy Descartes desire to be remembered
d) avoid long division