On 7/25/2010 2:10 PM, Rupert Swarbrick wrote: > > (note that coeff doesn't do anything_that_ clever, so if your power > of x isn't explicit, it won't work: > > (%i7) coeff( (x+2)500, x, 3); > (%o7) 0 > ratcoef is clever enough. Also look at bothcoef. RJF