| Last modified : 14 Jul 1999 |
-   | # Functions HELP-button A whole list with all the functions suported by Eureka. ln = natural logarithm x = ln(ex) log = base 10 logarithm x = log(10x) imaginary unit : i The imaginary unit is also often written as j (see curves of Bode), especially there were electrical currents are involved in the calculations and parameters. Current has also as symbol i. The definition of i can be written as follows : i*i = -1. Another way to see this is like this : sqrt(-1) = i (don't forget this is a faultly defenition because you can't take a sqrt from a negative number.) Logic Operators : & = logic AND This operator can be defined by next table :
    X | Y | X&Y
    --- | --- | ---
    0 | 0 | 0
    0 | 1 | 0
    1 | 0 | 0
    1 | 1 | 1
-   | = logic OR This operator can be defined by next table :
    X | Y | X|Y
    --- | --- | ---
    0 | 0 | 0
    0 | 1 | 1
    1 | 0 | 1
    1 | 1 | 1
-   ! = logic NOT This operator can be defined by next table :
    X | !X
    --- | ---
    0 | 1
    1 | 0
Special symbols : !> = not superior to !< = not inferior to // = parallel e.g. R1//R2=R1*R2/(R1+R2) The constant values : pi = PI = 3.141592654 eu = e = 2.718281828 i = imaginary unit More info will follow in the next version.