Ha 2016

a = 2
c = -0.2 (slider from -5 to 5, step 0.1)
b(x, y) = ((-(a - x)) * y^(2)) + ((a + x) * x^(2)) + c
f(x) = sqrt((((a + x) * x^(2)) + c) / (a - x))
f_1(x) = (-f(x))
h(x) = ((a + x) * x^(2)) + c
A, B = Extremum(h)