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 will award you bonus marks if you put in some error
checking to ensure that a negative value of n cannot be used. Note
that x can be positive or negative.

this is what i have achieved so far

number 'x' is in cell A4 and number 'n' is in cell A5. to get the
desired output, i key inthe formula

=IF(OR(ISERROR(POWER(A4,B4)),ISERROR(FACT(B4))),"W rong
parameters",POWER(A4,B4)/FACT(B4))


is this all i need to do?? does anyone no any other formulas??

and how to check for error in the programme???

cheers