math notations
what are [ and ] used for
they denote a range, for example, "[0,5]"= 0,1,2,3,4,5
what does << and >> mean
much less than and much greater than
what is the name of the thingy that can run all these symbols
LaTeX "lah-tech"
what is "±"
it means the uncertainty of something being positive or negative, or showing something has 2 possible answers, sqrt(1)= ±1
what is | ( shift+\)