Question

Помогите 309(2) срочно ,прошуууу!))))((((;;;(

Answer 1

$f(x)=4+\frac{1}{8}ln2x\\\\f'(x)=\frac{1}{8}\cdot \frac{2}{2x}=\frac{1}{8x}\\\\f'(3)=\frac{1}{8\cdot 3}=\frac{1}{24}$