Try putting parentheses around the negative 5 i.e. 10^(-5). And what's the T^2 reference? is it a cell? (as in column T, row 2) or is T some named cell (in which case I'd recommend a better, more descriptive name) And be explicit with what's supposed to happen between the 10^(-5) and the T^2. (should it be multiplied with the 10 or it's exponent?) Try something more like {10^[-5]}*{T^2} or 10^{[-5]*[T^2]} If you have any more issues, post the whole formula and we'll see If we can't sort it out. -Denny ----- Original Message ----- From: "John Pearson" To: "Microcontroller discussion list - Public." Sent: Thursday, November 25, 2004 2:00 PM Subject: [OT:] Math help please Again, please assume I am less than 9 or older than 40: I am trying to put this formula into Excel to calculate the density of water, but I can't seem to figure out why it won't work. If someone could show me how to enter it I would be grateful. I cannot enter the whole formula because I cannot enter it as written to me, but here is a small portion that I think I am having trouble translating to Excel: 10-5(T2), the -5 and the 2 are small and raised like exponents. So would I enter 10^-5(T^2) Thanks _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist