I'm just wondering what is the simplest way on the calculator to change the sign. Obviously I can x-1 which changes the sign to a negative or positive figure. However, I'm used to there being a +/- figure on calculators that I've used in the past. My calculator does have a (-) button, but I don't seem to be able to use it within other functions.
Eg, if I wanted to do 10^-3, how would I do this? Would I have to do 10 y^x ( 3 x (-) 1). This seems like a bit of a long winded way of doing the equation, is there an easier way?