Metrohm viva 1.1 - Manual (Page 70)

2.3 Formula editor
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viva 1.1
The parameter can be indicated either directly as a number or as a variable
of the Number type. If the parameter does not correspond to the
expected type, it will automatically be converted to it. If this is not possi-
ble, the result of this operation is returned as invalid.
Examples
Exp(1.5) = 4.48169
Exp('CV.AverageTemp') = Power of the exponent (common variable
CV.AverageTemp) for base e
2.3.4.5.2 Natural logarithm
Dialog window: Formula editor ▶ Operators/Functions
Syntax
y = Ln(number)
Returns the logarithm of the entered number for base e. Alternative nota-
tion for y = log
e
(number), where e is the Euler number (e = 2.71828…).
Parameters
Number
> 0
The parameter can be indicated either directly as a number or as a variable
of the Number type. If the parameter does not correspond to the
expected type, it will automatically be converted to it. If this is not possi-
ble, the result of this operation is returned as invalid.
Examples
Ln(3) = 1.09861
Ln('CV.AverageTemp') = Natural logarithm of the value of the common
variable CV.AverageTemp for base e
2.3.4.5.3 Common logarithm
Dialog window: Formula editor ▶ Operators/Functions
Syntax
y = Log(number)
Returns the logarithm of the entered number for base 10. Alternative
notation for y = log
10
(number).
Parameters
Number
> 0
The parameter can be indicated either directly as a number or as a variable
of the Number type. If the parameter does not correspond to the
expected type, it will automatically be converted to it. If this is not possi-
ble, the result of this operation is returned as invalid.