Нахождение производной сложной функции

\(f(x)=\sqrt{4+9x}\)

• \(\textcolor{white}{\boxed{\textcolor{black}{f'(x)=\dfrac{1}{2\sqrt{4+9x}}}}}\)
• \(\textcolor{white}{\boxed{\textcolor{black}{f'(x)=3}}}\)
• \(\textcolor{white}{\boxed{\textcolor{black}{f'(x)=\dfrac3{2\sqrt{4+9x}}}}}\)
• \(\textcolor{white}{\boxed{\textcolor{black}{f'(x)=\dfrac9{2\sqrt{4+9x}}}}}\)