1103027103

SubArea: 
Primitive function
Level: 
A
Project ID: 
1103027103
Accepted: 
1
In the picture there are graphs of four functions. Which of the functions is primitive to the function \( f(x)=3 \) on \( \mathbb{R} \)?
\( f_1 \)
\( f_2 \)
\( f_3 \)
\( f_4 \)