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                               Technique 24: Efficient Formula Copying
                     The rate argument cell uses a mixed cell reference  reference so that Excel uses the same loan term
                     where the column is relative and the row is absolute  (in the input cell B4) in every copy of the master for-
                     so that Excel adjusts the rate as you copy the for-  mula, regardless of whether this formula is copied
                     mula across columns B through G but does not      down rows 7 through 16 or across columns B
                     adjust off row 6 when you copy down rows 7        through G.
                     through 16. Likewise, the pv argument cell (the last
                     one in the PMT function) uses the opposite mixed  Just in case you’re interested, this is how the master
                     cell reference wherein the column is absolute and  formula in cell B7 (er, R7C2) appears in R1C1 notation:
                     the row relative. This allows Excel to adjust the prin-
                                                                         =PMT(R6C/12,R4C2*12,RC1)
                     cipal when you copy the formula down rows 7
                     through 16 but not adjust off column A when you
                                                                       If you were to switch to the R1C1 cell notation and
                     copy across columns B through G.
                                                                       then move the cell pointer through all the columns
                                                                       and rows of the table, you would see that every cell
                     Finally, the nper argument cell (in the second argu-
                                                                       contains an exact copy of this master formula.
                     ment in the PMT function) uses an absolute cell
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