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3. Use the definition of a limit (Definition 3.1.1) to show the following: (a) limx→2 (x...

3. Use the definition of a limit (Definition 3.1.1) to show the following: (a) limx→2 (x 2 + 2x − 5) = 3 (b) limx→1 (x 3 + 2x + 1) = 4 (c) limx→0 (x 3 sin(e x 2 )) = 0

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