Solving A Nice Differential Equation
7:11
Solving y'=(y/x)+2sqrt(y/x), a Differential Equation
8:51
A Very Nice Exponential Equation
9:53
Solving a Nice Rational Equation in Two Ways
8:09
A non-linear DE? There must be a trick!!
8:41
An Interesting System of Differential Equations
9:29
If x^y=8 and x is bigger than 1, then what's the minimum of x+y=?
12:02
viens, on teste des manipulations débiles
14:17