Question: Given a task set t l , t 2 , . ., t k to be scheduled on a single processor, where t i =(C

Given a task set t_l, t₂, . ., t_k to be scheduled on a single processor, where t_i=(C_i,T_i), C_i is the worst case execution time and T_i is the period of t_i (assume the deadline is equal to its period). Let U=C₁/T₁ + C₂/T_{2 +} + C_k/T_k. Prove that this task cannot be scheduled by any scheduling policy if U > 1.

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