Level:
Project ID:
1103027104
Accepted:
1
In the picture there are graphs of five functions. Which of the functions is primitive to the function \( f(x)=x^2 \) on \( \mathbb{R} \)?
all of \( f_2 \), \( f_3 \) and \( f_4 \)
only \( f_5 \)
only \( f_1 \)
only \( f_3 \) and \( f_4 \)