Casio fx-85gt plus scientific calculator, difference between binary and unary minus?

1.2k Views Asked by At

So in my new physics class when telling us how to deal with exponents on the calculators he said that when using the $\times10^x$ button you must use the unary minus operator which looks like a minus in brackets, I asked him why as all the time I've used it I've just ignored that button, he basically didn't give an answer. I'm curious if I should adopt this button or just continue on my way using the binary operator for everything... I looked in the manual and there doesn't seem to be a reference to it I could find, and the threads I looked at seemed to be focused on different calculators. Anyway, thanks :)

1

There are 1 best solutions below

0
On

They are the same thing as you say only in ALG mode. In RPN mode, instead, $-$ is used to effectively perform the subtraction of the previously entered operands, while $(-)$ is used to start entering a new negative number.