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Mathematics
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Paul Sinclair's user avatar
Paul Sinclair
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83
Counting numbers in a sequence - explain "Add $1$ before you're done" rule (fencepost error)
Sep 29, 2015
answer
40
Can a cubic function have two tangents at a single point?
Apr 29, 2017
answer
30
Explain why a line can never intersect a plane in exactly two points.
Jun 17, 2019
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27
What are the difference between some basic numerical root finding methods?
Oct 5, 2015
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23
Intuition for the prime number theorem
Feb 15, 2017
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22
Why can a quadratic equation have only 2 roots?
Dec 9, 2016
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21
Is the proof of Pythagorean theorem using dot (inner) product circular?
Feb 15, 2019
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20
Area of parallelogram = Area of square. Shear transform
Jul 25, 2019
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20
What are some math concepts which were originally inspired by physics?
Jan 8, 2016
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19
Prove that a number is divisible by 3 iff the sum of its digits is divisible by 3
Sep 30, 2015
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What is my four digit car number?
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Is dimensional analysis valid for integrals
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Plant 9 trees in 10 rows of 3
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Allow interstellar travel but not intergalactic travel
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For the honor of Hufflepuff