dy/dx=

f(x, y) = sin(x) + cos(y)
A = (-4.32, 0.36)
loc1 = SolveODE(f, x(A), y(A), 8, 0.1)
g(x, y) = 1 / sqrt(1 + f(x, y)^(2))
h(x, y) = f(x, y) / sqrt(1 + f(x, y)^(2))
リスト1 = Sequence(Sequence[Vector[(s, t), (s, t) + (g(s, t), h(s, t))], s, -6, 6, 0.5], t, -6, 6, 0.5)
入力ボックス1 = Textfield(f)