December 2011
Intermediate to advanced
1088 pages
24h 50m
English
book
Microsoft® Excel® 2010 Formulas & Functions Inside Out
by Helmut Reinke Egbert Jeschke Sara Unverhau, Eckehard Pfeifer, Bodo Fienitz, and Jens Bock
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ISNA()
Syntax. ISNA(value)
Definition. This function returns TRUE if the value argument is evaluated to the #N/A error. Otherwise, the function returns FALSE.
Arguments
value (required). The expression (a number, text, a formula without an equal sign, a logical value, an error value, a reference, or a name) that you want to check.
Background. This function is one of the nine IS() functions that return a logical value depending on the argument. The argument of the IS() functions is not converted for evaluation. This means that a string consisting of a number is interpreted as a string (not as a number).
Example. If you use the VLOOKUP() or HLOOKUP() function, a search term might not be found in the first column (or row) of an array, and the #N/A error ...
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