Hey,
I tried to construct the derivation of the integral C with respect to Y:
$$ \frac{\partial C}{\partial Y} = ? $$
$$ C = \frac{2}{\pi} \int_0^{\infty} Re(d(\alpha) \frac{exp(-i \cdot ln(f))}{i \alpha}) d \alpha $$
with
$$d(\alpha) = exp(i \alpha (b + ln(Y)) - u) \cdot exp(v(\alpha) + z...