2. RevisionRevision Function in Spreadsheet

3. DATE Returns the serial number of a particular date. Syntax –DATE(year,month,day) year is a number from 1900 to 9999 in Microsoft Excel for Windows

4. DATE Month is a number representing the month of the year. If month is greater than 12, then month adds that number of months to the first month in the year specified. For example, DATE(90,14,2) returns the serial number representing February 2, 1991. Date is a number representing the day of the month. If day is greater than the number of days in the month specified, then day adds that number of days to the first day in the month. For example, DATE(91,1,35) returns the serial number representing February 4, 1991.

5. DATE Remarks –The DATE function is most useful in formulas where year, month, and day are formulas, not constants.

6. DATE Examples –Using the 1900 date system (the default in Microsoft Excel for Windows), DATE(91, 1, 1) equals 33239, the serial number corresponding to January 1, 1991.

7. NOW Returns the serial number of the current date and time. Microsoft Excel stores dates as sequential serial numbers so that it can perform calculations on them. Excel stores January 1, 1900, as serial number 1 if your workbook uses the 1900 date system. For example, in the 1900 date system, Excel stores January 1, 1998, as serial number 35796 because it is 35,795 days after January 1, 1900.

8. NOW Numbers to the right of the decimal point in the serial number represent the time; numbers to the left represent the date. For example, in the 1900 date system, the serial number 367.5 represents the date-time combination 12:00 P.M., January 1, 1901. Examples If you are using the 1900 date system and your computer's built-in clock is set to 12:30:00 P.M., 1-Jan-1987, then: NOW() equals 31778.52083 Ten minutes later: NOW() equals 31778.52778

9. FIND FIND finds one text string (find_text) within another text string (within_text), and returns the number of the starting position of find_text, from the first character of within_text.

10. FIND unlike SEARCH, FIND is case sensitive and doesn't allow wildcard characters. Syntax –FIND(find_text,within_text,start_num) –Find_text is the text you want to find.

11. FIND –If find_text is "" (empty text), FIND matches the first character in the search string (that is, the character numbered start_num or 1). –Find_text cannot contain any wildcard characters. –Within_text is the text containing the text you want to find.

12. FIND –Start_num specifies the character at which to start the search. The first character in within_text is character number 1. If you omit start_num, it is assumed to be 1.

13. HLOOKUP Searches for a value in the top row of a table or an array of values, and then returns a value in the same column from a row you specify in the table or array. Use HLOOKUP when your comparison values are located in a row across the top of a table of data, and you want to look down a specified number of rows.

14. HLOOKUP Syntax –HLOOKUP(lookup_value,table_array,row _index_num,range_lookup) Lookup_value is the value to be found in the first row of the table. Lookup_value can be a value, a reference, or a text string. Table_array is a table of information in which data is looked up. Use a reference to a range or a range name.

15. HLOOKUP –The values in the first row of table_array can be text, numbers, or logical values. –If range_lookup is TRUE, the values in the first row of table_array must be placed in ascending order:...-2, -1, 0, 1, 2,..., A-Z, FALSE, TRUE; otherwise, HLOOKUP may not give the correct value. If range_lookup is FALSE, table_array does not need to be sorted.

16. HLOOKUP –Uppercase and lowercase text are equivalent. –You can put values in ascending order, left to right, by selecting the values and then clicking Sort on the Data menu. Click Options, click Sort left to right, and then click OK. Under Sort by, click the row in the list, and then click Ascending.

17. HLOOKUP Row_index_num –is the row number in table_array from which the matching value will be returned. A row_index_num of 1 returns the first row value in table_array, a row_index_num of 2 returns the second row value in table_array, and so on. If row_index_num is less than 1, HLOOKUP returns the #VALUE! error value; if row_index_num is greater than the number of rows on table_array, HLOOKUP returns the #REF! error value.

18. HLOOKUP –Range_lookup is a logical value that specifies whether you want HLOOKUP to find an exact match or an approximate match. If TRUE or omitted, an approximate match is returned. In other words, if an exact match is not found, the next largest value that is less than lookup_value is returned. If FALSE, HLOOKUP will find an exact match. If one is not found, the error value #N/A is returned.

19. HLOOKUP Remarks –If HLOOKUP can't find lookup_value, and range_lookup is TRUE, it uses the largest value that is less than lookup_value. –If lookup_value is smaller than the smallest value in the first row of table_array, HLOOKUP returns the #N/A error value.

20. HLOOKUP Examples –Suppose you have an inventory worksheet of auto parts. A1:A4 contain "Axles", 4, 5, 6. B1:B4 contain "Bearings", 4, 7, 8. C1:C4 contain "Bolts", 9, 10, 11. –HLOOKUP("Axles", A1:C4,2,TRUE) equals 4

21. HLOOKUP –HLOOKUP("Bearings",A1:C4,3,FALSE) equals 7 –HLOOKUP("Bearings",A1:C4,3,TRUE) equals 7 –HLOOKUP("Bolts",A1:C4,4,) equals 11 –Table_array can also be an array constant: –HLOOKUP(3,{1,2,3;"a","b","c";"d","e","f"},2, TRUE) equals "c"

22. VLOOKUP Searches for a value in the leftmost column of a table, and then returns a value in the same row from a column you specify in the table. Use VLOOKUP instead of HLOOKUP when your comparison values are located in a column to the left of the data you want to find.

23. VLOOKUP Remarks –If VLOOKUP can't find lookup_value, and range_lookup is TRUE, it uses the largest value that is less than or equal to lookup_value. –If lookup_value is smaller than the smallest value in the first column of table_array, VLOOKUP returns the #N/A error value. –If VLOOKUP can't find lookup_value, and range_lookup is FALSE, VLOOKUP returns the #N/A value.

24. VLOOKUP Examples –On the preceding worksheet, where the range A4:C12 is named Range: VLOOKUP(1,Range,1,TRUE) equals 0.946 VLOOKUP(1,Range,2) equals 2.17 VLOOKUP(1,Range,3,TRUE) equals 100 VLOOKUP(.746,Range,3,FALSE) equals 200 VLOOKUP(0.1,Range,2,TRUE) equals #N/A, because 0.1 is less than the smallest value in column A VLOOKUP(2,Range,2,TRUE) equals 1.71