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Engineering
John Bentin's user avatar
John Bentin's user avatar
John Bentin's user avatar
John Bentin
  • Member for 9 years, 9 months
  • Last seen more than 1 year ago
  • Oxford, United Kingdom
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131
Why is the Penrose triangle "impossible"?
74
Find $xy+yz+zx$ given systems of three homogenous quadratic equations for $x, y, z$
36
How few disks are needed to cover a square efficiently?
35
To sum $1+2+3+\cdots$ to $-\frac1{12}$
33
When do two functions become equal?