programming assistance

[biker man]

I want to write a program that takes a
number,x, from cell A3 and a positive integer, n, from cell B3 then
returns into cell C3 the value of x raised to the power n divided by
n factorial.

i want to add error checking so that a negative value of n cannot be
used

i entered this in cell C3

=IF(B3=",", IF(B3<=0," Integer in B3 must be positive",(A3^B3)/B3)

but all i get is a FALSE coem up in the cell

but i need to return in cell C3 the value of x raised to the power n
divided by n factorial.

Also do i need to write anyhting in VBA for this too work or not???

any help

 

[BigPig]

how about

=IF(B3<>"",IF(B3<=0," Integer in B3 must be positive",(A3^B3)/B3))

 

[Bob Phillips]

=IF(B3="","",IF(B3<=0,"Integer in B3 must be positive",(A3^B3)/B3))

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HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my addy)

 

[Dave O]

Here's one answer:

=IF(B3<=0,"Integer in B" & ROW() &" must be positive",(A3^B3)/
FACT(B3))

ROW() returns the formula's row number, in case you need to apply this
formula to different cells.