So while I was waking up I started thinking about parabolas and absolute value functions and I suddenly realised that if you first square any function and then take the square root of it you will end up with the absolute value of that, since you're taking out the negatives by squaring them and putting them back to place by rooting them. Does anypne know if this method has been used anywhere?
2026-03-30 06:49:21.1774853361
Curious way of getting abs.
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This is a common fact, and without more details on what you want to use it for, I can't think of any place where it is critically useful.
A fun way of using this is in the "false proofs," i.e. $$ -2=-2\\ 4-6=1-3\\ 4-6+9/4=1-3+9/4\\ (2-3/2)^2=(1-3/2)^2\\ 2-3/2=1-3/2\\ 2=1 $$