Encountering Problems with Near Vision after 40. If you have never needed eyeglasses or contact lenses to correct distance vision, then experiencing near vision problems after age 40 can be concerning and frustrating. You may feel like you've abruptly lost the ability to read the newspaper or see the cell phone numbers.
A system of symbols used to represent special things. Example: In mathematical notation â means infinity.
Now we are going to take a look at function notation and how it is used in Algebra. The typical notation for a function is f(x). This is read as f of x This does NOT mean f times x. This is a special notation used only for functions. However, f(x) is not the only variable used in function notation. You may see g(x), or h(x), or even b(a). You can use any letters, but they must be in the same format - a variable followed by another variable in parenthesis.