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Find the numerical value of the sums below. 78 (a) E(-Ai?) E i=1 78 (b) (-4i?) i=4 Hint: Do not simplify. This list of summation

Find the numerical value of the sums below. 78 (a) E(-Ai?) E i=1 78 (b) (-4i?) i=4 Hint: Do not simplify. This list of summation rules may be helpful

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