Question

[Pham Trong Bach]

Cho hàm số  $y=f\left(x\right)=\left\{\begin{array}{c}\frac{x-1}{2}\\ -x-7\end{array}\right.$ khi  $\begin{array}{c}x\ge 2\\ \\ x<2\end{array}$

Tính  $f\left(3\right);f\left(0\right);f\left(2\right);f(-2)$

A. f(3) = 1; f(0) = -7; f(2) =  $\frac{-1}{2}$; f(-2) = -5

B. f(3) = -10; f(0) = -7; f(2) = -9; f(-2) = -5

C. f(3) = 1; f(0) = -7; f(2) = $\frac{1}{2}$; f(-2) = -5

D. f(3) = 1; f(0) = 7; f(2) = $\frac{1}{2}$; f(-2) = -9

Answer 1

[Cao Minh Tâm]