hump_secant2

hump_secant2
  Use the secant method to search for a root of the hump function.

  F(1) = 16
  F(2) = -4.85517
2: Estimated convergence rate = -1.37028
3: Estimated convergence rate = -0.189851
4: Estimated convergence rate = 3.41236
5: Estimated convergence rate = 0.375815
6: Estimated convergence rate = 1.68712
7: Estimated convergence rate = 0.895084
8: Estimated convergence rate = 3.05508
9: Estimated convergence rate = 0.995323
10: Estimated convergence rate = 1.95087
11: Estimated convergence rate = 1.53682

  After 11 iterations:
  F(1.29955) = -2.67431e-12

  it <= itmax?  true
  |a-b| <= xtol?  true
  |f(b)| <= ftol?  true
diary kepler_secant2.txt