how do i setup an if, then statement

[Guest]

i want to test a cell - a2 - for a value >0
if >0 i want to multiply a1*a2
else do nothing
t.i.a.

 

[JE McGimpsey]

One way:

=IF(A2>0,A1*A2,"")

The "" is a null string, so it technically doesn't "do nothing"
(functions always return some value), but it won't display anything.