Consider the following integrals $$ I_1(x) =\int_0^\infty\mathrm dy \frac{F(x + \mathrm iy) − F(x −\mathrm iy)}{\mathrm e^{2πy}-1}, $$
And
$$I_2(x) =\int_1^x F(t)dt$$
Where, $ F(z) = \sin^2[π\Gamma(z)/(2z)]$
I want to plot (with considerable accuracy) $$R(x)=I_1(x)/I_2(x)$$
Also , see if it's apparent from plot : $R(x)\rightarrow0$ as $x\rightarrow\infty$
I want growth rate of local minimas and Maximas of $I_1(x)$ as $x\rightarrow\infty$
See this MSE post for more details .