Level:
Project ID:
1003112006
Source Problem:
Accepted:
1
Clonable:
1
Easy:
1
Given the function \( f(x)=x^2+7 \), determine all the values of \( x \) (\( x\in\mathbb{R} \)) for which \(|f' (x)|=1 \).
\( x_1=\frac12 \), \( x_2 =-\frac12 \)
\( x=\frac12 \)
\( x_1=1 \), \( x_2 =-1 \)
\( x=1 \)
\( x=-\frac12 \)