[Toán 8] Tính f (-1) : f 0 : f (1)

K

kool_boy_98

Cho hàm số y=f(x) 8x-2

A. Tính f (-1) : f 0 : f (1)

~> $f(-1)=8.(-1)-2=-10$

$f(0)=8.0-2=-2$

$f(1)=8.1-2=6$

tương ứng y=-4 : y =0

$y=-4 \Longleftrightarrow 8x-2=-4 \Longleftrightarrow x=\frac{-1}{4}$

$y=-0 \Longleftrightarrow 8x-2=0 \Longleftrightarrow x=\frac{1}{4}$

 
You must log in or register to reply here.
Top Bottom