if x+y=8, find the max of x^y (Lambert W function)
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19:32
Math for fun, sin(z)=2
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15:51
combining rational exponents, but using calculus,
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14:47
An Exact Formula for the Primes: Willans' Formula
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15:17
You see nonlinear equations, they see linear algebra! (Harvard-MIT math tournament)
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15:19
What does the second derivative actually do in math and physics?
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13:51
so you want a VERY HARD math question?!
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17:26
Researchers thought this was a bug (Borwein integrals)
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38:32