可以说一下么
f[x_] := (10 - 5 Cosx)/Sinx + (12 - 5 Sinx)/Cosx
a0 = 0.; b0 = Pi/2.; delta = 10^(-2); k0 = 100;
a = a0; b = b0; Do[x = (a + b)/2; Print[x];
If[f'[x] == 0, break[], If[N[f'[x]*f'[b]] < 0, a = x, b = x]];
If[N[Abs[b - a]] < delta, break[],
If[k == k0, Print[失败]]], {k, k0}]
我已经写到这里了 g(x)随便是什么函数都行 关键是不会表达形式