Question: Please answer/provide the following proof Example: The Triangle Inequality: Vx,y ER, (x + y= 2 + yl. Proof by division into cases: Consider the following

Please answer/provide the following proofPlease answer/provide the following proof Example: The Triangle Inequality: Vx,y ER, (x

Example: The Triangle Inequality: Vx,y ER, (x + y= 2 + \yl. Proof by division into cases: Consider the following cases Case 1) x + y > 0 Case 2) x + y

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