I need help I been stuck on this assignment for 2 weeks because of that question.

Answer:
A. [tex]-2\sqrt{2\pi }[/tex]
Step-by-step explanation:
[tex]f(x)=sin(x^{2}+\pi )[/tex]
[tex]f^{'}(x)=cos(x^{2} +\pi ) 2x[/tex]
[tex]f^{'}(\sqrt{2\pi } )=cos(2\pi +\pi )2\sqrt{2\pi }[/tex]
[tex]f^{'} (\sqrt{2\pi } )=-1 (2\sqrt{2\pi } )[/tex]