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# Matrix calculation problem ...

## Matrix calculation problem ...

(OP)
Suppose i have some values in the following cells:
A1, A2,A3,A4......
B1, C1, D1, E1,......

What i want to do is calculate vales for cells as follows:
B2 = B1 * A2/0.85
B3 = B1 * A3/0.85
B4 = B1 * A4/0.85
AND SO ON ..

Similarly,
C2 = C1 * A2/0.85
C3 = C1 * A3/0.85
C4 = C1 * A4/0.85
AND SO ON ..

And repete that for all the cells

whats the easiest way of doing it ??

### RE: Matrix calculation problem ...

put:
=b$1*$a2/0.85
in B2 and copy where needed

TTFN

### RE: Matrix calculation problem ...

(OP)
it worked..thanks for that

But wht B$1*A$2 IS different from B1 * A2 when we copy it across all the other cells ??
What does the $sign does ? Thanks ### RE: Matrix calculation problem ... You adress a cell by its name that is given by its column position and row position; cell B2 means a cell in column "B" and row "2". If you copy a formula, say "B2 = B1 * A2/0.85", from one location to another, it will assume calculations with same relative positions of the cells, so copied to e.g. a cell"G5" the value in the cell will be calculated as G4*F5/0.85 unless you fix the adress of a factor with a prefix character "$". So if you copy your formula B2 = B$1 * A2/0.85 with fixed row index($1)it means that into whatever row you copy your formula the first factor will be the cell from the first row of the particular column.It could be as well fixed column index, B2 = $B1 * A2/0.85, where at whatever cell the first factor will be from colum "B".If you add prefix"$" to both column and row index ($B$1)then the first factor in the formula copied all over the spread sheet will remain B1.
m777182

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