Optimal tax rates

n\m

0.2

0.6

1

1.4

0.2

No solution

No solution

No solution

No solution

0.4

44.83%

44.89%

44.94%

44.98%

0.6

46.15%

46.20%

46.25%

46.29%

0.8

36.00%

36.04%

36.07%

36.10%

1

36.83%

36.86%

36.89%

36.92%