Cho hàm số y=f(x)=pi(x^2+3) khi x>=1 pi(5-x) khi x<1

Câu hỏi :

Cho hàm số $y=f\left(x\right)=\mathrm{\pi }\left\{\begin{array}{l}{\mathrm{x}}^2+3 \mathrm{khi} \mathrm{x}\ge 1\\ 5-\mathrm{x} \mathrm{khi} \mathrm{x}<1\end{array}\right.$. Tính $I=2{\int }_0^{\frac{\mathrm{\pi }}{2}}f\left(\sin x\right)\cos xdx+3{\int }_0^{1}f(3-2x)dx$