f = Function(sin(π * x) - 2, -1, 1)
g = Function(π * (x - 2)^(2) / 2 - π / 2 - 2, 1, 3)
q = Function(-sqrt(x + 2) - 1, -2, -1)
p = Function(sqrt(-x - 2) - 1, -6, -2)
h = Function(ℯ^(x - 3) - 2, 3, 6)