fatcousin
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manifesto
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why fatcousin exists — local-first, no uploads.
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save this toolset to your device — works offline.
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e
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set ε · the tool finds δ · if the limit exists you always win · runs locally
x²
sin(x)/x
step
x·sin(1/x)
reset
ε (challenge)
0.500
ε
0.5000
δ found
0.22474
limit exists · you win
ready
local
verify
→