I have the next equation:
I wrote it in mathematica and I obtained
f[h_] = 8 - 5 (-(2 - h) Sqrt[4 h - h^2] + 4 Sec[(2 - h)/2])
Now I have to solve it, finding the
I know that
h is between
0<=h<=4 by the Sqrt equation but I don't know how to find the real root. I tried with NSolve or FindRoot but it didn't work.