I've decided to do something of a math refresher course, and it seems to be going well. However, I ran into a notation I didn't recognise, and I couldn't find it used elsewhere (I tried copy and pasting it into google). It seems to mean the square root of x squared, as far as I can tell. Can anyone confirm or supply an explanation? Here's the relevant image:
Until I saw that image, I would have assumed that notation meant 2^x. Can anyone explain what I'm missing? It would be greatly appreciated.
Until I saw that image, I would have assumed that notation meant 2^x. Can anyone explain what I'm missing? It would be greatly appreciated.