f'

X1_{1} = NaN
f1(x) = (-1 / 2 * (x - 1)^(2)) - 1 / 2
f = Integral(f1)
Q4: (1, -1.5)
Q1: (1, 0.5)
Q2: (1, 0)
a: f1(1)
P: (0, f(0))
Q3: (1, f(1))