6:20

Can this be done?

16:49

Find all positive integer n

25:46

integral of sqrt of tanx

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Solving a Quartic Equation

9:29

If x^y=8 and x is bigger than 1, then what's the minimum of x+y=?

8:54

Germany’s Far-Right Comeback | NYT Opinion

22:00

Harvard admission question from 2000s

16:57

A very interesting log trig integral