Let for
and
. Assume that
Prove:
and
Prove:
a. If
with
and
are solutions of
with
then
for
b. Assume (for simplicity) that
is continuously differentiable. If
has a nonextendable solution
with
then the domain of every nonextendable solution
of
with
contains
.
.
with
b. Assume (for simplicity) that
.