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The table below gives for the value of continuous function [math] at each [math]-value. Using the Intermediate Value Theorem and the information in the table, determine the smallest interval in which the function must have a root.

[math] [math]
[math][math]
[math][math]
[math][math]
[math][math]
[math][math]
[math][math]
[math][math]
[math][math]
[math][math]
[math][math]
[math][math]

Answer (in interval notation):

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