Thanks for the replies.

I've tried to copy what you have done but when I've tried it with my actual formula is gets an error message.

I'm trying to paste the formula from maple onto this forum, but I'm having difficulty. Hopefully I'll paste it soon. I seem not to be able to even attach an jpeg image.

Here's the formula in text format;

q = (.807*(275000000*t^2/(.572*.3)))*(t^2/((1-.33^2)^3*.3^2))^(1/4)