|More Thoughts On Recurring Decimals
||[May. 15th, 2007|05:29 pm]
Unofficial Murderous Maths Forum on LJ
So Chunk was pestering me for a really hard "convert this recurring decimal into a fraction question", so I said ok fine... um... 0.574372924679 and the 9 at the end recurs.|
He sat there for a while puzzling and then wondered what 0.000000000009999999... was. I didn't know. [Help much? See below.]
Chunk decided to take an easier version of the problem and go from there and I realised I'd walked him into the 0.9999999.... = 1 idea
He then stumbled upon the proof for this:
0.99999... = n
9.99999... = 10n
9 = 9n
1 = n
So, following this, does 0.000000000009999999... = 0.00000000000.1?
[And on a sidenote, the main irritating thing was once again, McMaffs dismissing non syllabus mathematics, and blatantly NOT GIVING US THE RIGHT ANSWER. She took a look as far as 9 = 9n and concluded that n must be 1/9. >_< GAHCK! What? You call that maths?!?!?]
Briefly accidentally posted to yayworthy. Sorry if you were friendlist spammed at this time.