# showing existence of nontrivial solution

• November 7th 2012, 02:48 AM
alphabeta89
showing existence of nontrivial solution
Show that the differential equation $x' = \frac{x \sin(e^x+t)}{1+(e^t \cos x+x)^2}, x(1) = 1$ has a nontrivial solution $\phi(t)$ defined on
$[0,2]$ such that $0 < \phi(t) < \frac{\pi}{2}$ for all $t \in [0,2]$.

I only know that x = 0 is a trivial solution. Then how do I proceed? (Thinking)