Hey there world, I'm in year 11 right now and I just had a brief discussion with my maths teacher about function notation, specifically, how to write the result of a function squared, as apposed to the argument to a function squared.
Say we were using trigonomics functions
For a test, I wrote this,
Assuming, as the programmer I am that it would be taken to mean sin(50)*sin(50)
I was subsequently told that the correct notation is
I'm going to get the marks back anyway as the calculator used the notation I thought correct, but I'm curious, is that actually 'proper' mathematical convention?
It seems a bit weird to bother using open close brackets to denote the argument to a function if your going to ignore them anyway. I suppose I should mention I'm Australian, just in case its some kind of English v American system.
Thanks for the help!