this is just a common error, of "equating a nonterminating rational number with an integer; 0.9999... is equal to 1.0000..., not to 1 <period; this sole ambiguity is detailed by Stevin in 15th cce, but his notation was really bad (at least, in the first edition of his huge, best-selling, multi-translated from teh Latin [Stevin is a pen name
> numbers. You even claim that 0.9999 = 9/10+9/100+9/1000+9/1000+... is NOT > > the same as one. You reject the whole notion of non-terminating infinite > > serier and sequences. And yet you use them in your example for sin(x).