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© François
Le Coat
©Karl Samyn
Last modified :
28 May
2000 |
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Functions
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HELP-button
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A whole list with all the functions suported by Eureka.
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ln = natural logarithm
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x = ln(ex)
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log = base 10 logarithm
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x = log(10x)
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imaginary unit : i
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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 :
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& = logic AND
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This operator can be defined by next table :
X |
Y |
X&Y |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
1 |
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| = logic OR
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This operator can be defined by next table :
X |
Y |
X|Y |
0 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
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! = logic NOT
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This operator can be defined by next table :
Special symbols :
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!> = not superior to
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!< = not inferior to
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// = parallel e.g. R1//R2=R1*R2/(R1+R2)
The constant values :
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pi = PI = 3.141592654
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eu = e = 2.718281828
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i = imaginary unit
More info will follow
in the next version.
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