Parentheses used to group items

Single letter

Optional explicit

Division is done before

name

multiplication

addition

The next equation also obeys the syntax rules. This equation uses the inverse function, , instead of the fractional form, . Notice that the SIN function is "nested" inside the INV function. (INV is typed by .)



Example: Area of a Polygon.

The equation for area of a regular polygon with n sides of length d is:

Area =

1

 

2

cos(π /n)

4 n d

sin(π/n)

 

 

 

 

 

 

d

 

 

 

2π/n

You can specify this equation as

ππ

Notice how the operators and functions combine to give the desired equation.