zkfcfbzr@lemmy.worldtoReddit@lemmy.world•As a 14-year long user, the new Fisher Price UI makes me sad :( What have they done to you, Reddit?English
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1 year agoThat part’s real - not for 0.999 but for 0.999… (repeating). The classic proof goes:
Let x = 0.999999…
Then multiply both sides by 10. You now have:
10x = 9.999999…
Now subtract the first equation from the second equation. You get:
10x - x = 9.999999… - 0.999999…
9x = 9
Then divide by 9 to complete the proof:
x = 1
For those wanting to follow along