If det m nit 0
Then there is a unique solution at the inverse point
If det m = 0
Then chekc if equations consistent
If they are, then it means sheaf infinite
If not triangukar prism 0
And if Parallele r. Fo thst
A mirro line = line of invariant lojtns
So how to find. This, find the line fo invariant poitns which is consistent = equation if mirror lime
Further stop away form polar curve coordinates
= maximum value of it when theta maximum
So kcmvert ot harmonic and do
In thr range
R is r , and polar form thr y is the theta remember