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Q&A

General Q&A about all branches of theoretical and applied mathematics, including closely-adjacent sciences where the central question is about the math.

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What is "continuous" in Math?

3 answers  ·  posted 2mo ago by JohnDoea‭  ·  last activity 2mo ago by Istiak‭

42%
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50%
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33%
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33%
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If k = 1, why $n(n-1) \dots \color{red}{(n-k+1)} = n$?

1 answer  ·  posted 4mo ago by DNB‭  ·  edited 4mo ago by DNB‭

50%
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50%
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Is $x=\int \int \ddot{x}\mathrm dx \mathrm dx$?

1 answer  ·  posted 2mo ago by Istiak‭  ·  last activity 2mo ago by celtschk‭

66%
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42%
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Is $r \times \frac{d}{dt} mv=\frac{d}{dt} (r \times mv)$

1 answer  ·  posted 2mo ago by Istiak‭  ·  last activity 2mo ago by Joel Reyes Noche‭

60%
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40%
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What is the meaning of integration under integral sign?

1 answer  ·  posted 3mo ago by Istiak‭  ·  last activity 3mo ago by Istiak‭

71%
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What're the orders for equation expressing?

2 answers  ·  posted 2mo ago by Mark Giraffe‭  ·  last activity 2mo ago by r~~‭

50%
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42%
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How do mathematicians measure shape perimeters?

2 answers  ·  posted 3mo ago by JohnDoea‭  ·  edited 2mo ago by JohnDoea‭

80%
+6 −0
How to show if a set is simply connected?

1 answer  ·  posted 5mo ago by kreijstal‭  ·  last activity 5mo ago by Derek Elkins‭

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28%
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How do I prove Simpson's Paradox, scilicet $P(A|B) > P(A|B^C)$?

0 answers  ·  posted 2mo ago by DNB‭  ·  edited 2mo ago by DNB‭

50%
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