Question: In Problems 1-4, find a good bound for the maximum value of the given expression, given that c is in the stated interval. Answers may

In Problems 1-4, find a good bound for the maximum value of the given expression, given that c is in the stated interval. Answers may vary depending on the technique used?
1. |e2c + e-2c|; [0, 3]
2. |tan c + sec c|; [0, ( / 4]
3. |4c / sin c|; [( / 4, ( / 2]
4. |4c / c + 4| ; [0, ( / 4]

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