Did you mean f(x) - 3?
The difference between an expression and an equation is that an expression doesn't have an equal sign, and an equation does.
(That is the basics)
Sorry that is probably wrong.
In order to enter sec^-1, you can put 1 over sec in the calcultor or 1/sec
If this doesn't help you, please clarify your question.
111 X 8 is one of the many equations that equal 888 :P
You can look under "Sticky Topics" if you want to know how to type fractions.
