A = (1.34, 1.46)
a = -0.5999999999999996 (slider from -5 to 5, step 0.1)
b = -1.4 (slider from -5 to 5, step 0.1)
c = -1.6999999999999997 (slider from -5 to 5, step 0.1)
text1: "Equation différentielle
 " + a + " y' + (" + b + ") y = " + c + ",
avec la condition initiale
y(" + (x(A)) + " = " + (y(A))
f(x) = c / b + (y(A) - c / b) exp(b / a * (x(A) - x))
d: y = c / b
list1 = Sequence(Sequence[Vector[(i, j), (i + 0.1 / sqrt(1 + ((c - b j) / a)^(2)), j + 0.1 * (c - b j) / a / sqrt(1 + ((c - b j) / a)^(2)))], i, -4, 4, 0.2], j, -3, 3, 0.2)