How do I solve this? Been stuck on it forever!
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Originally Posted by nathan02079 How do I solve this? Been stuck on it forever! Square both sides to remove the modulus. Then you have . You should be able to solve this inequality now.
Originally Posted by Prove It Square both sides to remove the modulus. Then you have . You should be able to solve this inequality now. You need to be careful if you're squaring both sides of an inequality: ? I don't think so. If , then and ??? I think instead, you'll need to look at the signs of and in the cases and consider each one as a separate inequality. Have you tried this approach? Grandad
Last edited by Grandad; Jan 11th 2009 at 11:12 PM. Reason: Simplified solution
Originally Posted by nathan02079 How do I solve this? Been stuck on it forever! 1. The domain is 2. 3. is true for all x because both summands at the LHS are positive. Therefore 4. Therefore Thanks o_O! EDIT: I've removed my mistake. Corrections in red!
Last edited by earboth; Jan 12th 2009 at 12:47 AM. Reason: corrections
Originally Posted by earboth 4. Small correction in red. Reason being:
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